A 10th-century astrologer in Baghdad, working by lamplight on a parchment of the Ghayat al-Hakim, would have paused at the 12th mansion. He knew its star by two names: Al Simak al A’zal, the Unarmed One, and the brighter of the pair that shared the root simak — a thing held high, a support. Al Simak in lunar mansions refers to two distinct stars, Spica (Al Simak al A’zal) and Arcturus (Al Simak al Ramih), which mark the 12th and 13th mansions in the Arabic system of 28 lunar stations. The first is unarmed, the second carries a spear. Their names preserve a story about how the sky was read before telescopes, and how the moon’s nightly journey was mapped onto the fixed stars.
Where the Names Come From
The Arabic word simak (سماك) means “something raised high” or “a support.” In pre-Islamic star lore, the two stars that bear this name were seen as guardians or pillars. Al Simak al A’zal (Spica, α Virginis) was called “the Unarmed” because it stands alone, without nearby stars that could be imagined as weapons. Al Simak al Ramih (Arcturus, α Boötis) was “the Spear-Bearer,” because it rises with a cluster of fainter stars that resemble a lance.
The 28 lunar mansions (manazil al-qamar) were codified by Arabic astronomers by the 9th century, drawing on earlier Indian and Persian systems. The 12th mansion, Al Simak, covers Spica and the surrounding region of Virgo. The 13th, also called Al Simak but distinguished by the epithet al Ramih, covers Arcturus and the stars of Boötes. The two mansions are adjacent in the sky, separated by about 15 degrees of ecliptic longitude.
Al-Biruni, writing in 1029 CE in The Book of Instruction in the Elements of the Art of Astrology, lists the mansions in order and gives their associated planetary influences. He notes that the 12th mansion (Al Simak al A’zal) is “of the nature of Venus and Mercury,” while the 13th (Al Simak al Ramih) is “of the nature of Mars and Jupiter.” The distinction mattered: the unarmed star was gentle, the spear-bearer was martial.
What the Two Stars Actually Are
Spica is the brightest star in the constellation Virgo, 250 light-years from Earth. Its name comes from the Latin spicum, meaning “ear of grain,” because the star sits in Virgo’s left hand holding a sheaf of wheat. In the Arabic system, that same star was the Unarmed One — a figure without a weapon, offering grain instead.
Arcturus is the fourth-brightest star in the night sky, 37 light-years away. Its name derives from the Greek Arktouros, “Guardian of the Bear,” because it follows the constellation Ursa Major across the sky. The Arabic spear-bearer image is different: the star stands at the knee of Boötes the Herdsman, and the fainter stars of the constellation form a spear or staff.
The two stars are not physically related. They appear close in the sky only from our vantage point. But their pairing in the lunar mansion system reflects a practical observation: the moon passes through the region of Spica and then Arcturus over two consecutive nights, and both stars are bright enough to mark the boundary.
Why the Mansion Mattered
The 12th mansion, Al Simak al A’zal, was considered favorable for planting, marriage, and travel. The unarmed star carried no threat. Farmers in the medieval Islamic world watched for the moon’s conjunction with Spica to sow wheat and barley — the grain in Virgo’s hand matched the crop in the ground. Talismans made when the moon was in this mansion were used for healing fevers and reconciling disputes.
The 13th mansion, Al Simak al Ramih, was more dangerous. The spear-bearer brought conflict, litigation, and wounds. Electional astrologers avoided beginning journeys or battles under this mansion. But it was not entirely negative: the spear could also cut through obstacles. Talismans for courage or victory in legal matters were sometimes made here, with the understanding that the star’s martial nature had to be carefully directed.
The Picatrix, a 11th-century Arabic grimoire translated into Latin in 1256, gives detailed instructions for working with each mansion. For Al Simak al A’zal, it prescribes a talisman of silver engraved with the image of a seated woman holding an ear of wheat, to be made when the moon is in the mansion. For Al Simak al Ramih, it recommends an iron talisman with the figure of a man holding a spear, for protection in battle.
How the Mansions Compare to Indian Nakshatras
The Indian system of 27 nakshatras overlaps with the Arabic mansions, but the boundaries differ. Spica corresponds to the nakshatra Chitra (“the Bright Jewel”), which spans from 23°20′ Virgo to 6°40′ Libra. Chitra is ruled by Tvashtar, the celestial architect, and is considered a soft (mridu) nakshatra, favorable for art, adornment, and pleasure. The Arabic Al Simak al A’zal shares this gentle quality.
Arcturus falls within the nakshatra Swati (“the Sword” or “the Self-Going”), which runs from 6°40′ to 20°00′ Libra. Swati is ruled by Vayu, the wind god, and is a mobile (chara) nakshatra, good for travel, trade, and change. The spear-bearer’s martial energy is less pronounced here than in the Arabic system, but the sense of movement and cutting through is present.
A practitioner working with both systems would note the difference: the Arabic Al Simak al Ramih is more aggressive than Swati. The spear is a weapon, not a sword of self-determination. This is where the cultural lens matters, the same star seen through different traditions carries different meanings.
Common Misconceptions
That Al Simak is one star. The name refers to two distinct stars in two different constellations. Confusing them leads to errors in electional astrology, because the 12th and 13th mansions have opposite effects.
That the lunar mansions are the same as the zodiac signs. They are not. The mansions are 28 divisions of the moon’s daily motion, each about 12°51′ wide. The zodiac signs are 12 divisions of the sun’s annual path, each 30°. Spica sits at 23°50′ Libra in the tropical zodiac, but the mansion Al Simak covers a wider band of sky that shifts with precession.
That the “unarmed” star is weak. The absence of a weapon does not mean absence of power. Spica is one of the brightest stars in the sky, and its mansion is considered strongly beneficial. The name describes its character, not its magnitude.
That the spear-bearer is always malefic. Al Simak al Ramih can be used for protective magic and victory, provided the practitioner understands its nature. It is not a “bad” mansion, but a sharp one.
FAQ
Is Al Simak the same as Spica?
Al Simak al A’zal is Spica. Al Simak al Ramih is Arcturus. The name “Al Simak” alone usually refers to the 12th mansion, but context matters.
Which lunar mansion system uses Al Simak?
The Arabic system of 28 manazil al-qamar uses Al Simak for the 12th and 13th mansions. The Indian nakshatra system does not use this name.
What is the best use of the 12th mansion Al Simak?
Planting, marriage, healing, and talismans for peace. The moon in this mansion is favorable for any work that requires gentleness and growth.
Can I use Al Simak al Ramih for protection magic?
Yes, but with caution. The spear-bearer’s energy is aggressive. Use it when you need to cut through an obstacle or defend against an attack, not for general protection.
Closing
Al Simak is a reminder that the same sky can be read in two ways: the unarmed hand offering grain, and the raised spear demanding attention. The lunar mansions give each star a context, a night when the moon passes close, and a moment when its influence can be caught. For those who work with the mansions, knowing the difference between the two Al Simaks is not trivia. It is the difference between planting and fighting.
Explore the full system of lunar mansions and their uses in electional astrology. For a deeper look at how stars like Spica and Arcturus appear across traditions, see our glossary of fixed stars. And if you want to work with the 12th mansion directly, our guide on Al Simak al A’zal covers its talismanic and ritual applications.