Jataka Tattva · by Mahadeva
Chapter 5 · Brothers and Livelihood: the 3rd House
सहजविवेकः
स्त्रीखेटैर्धर्मगैर्भगिन्यो नृखेटैर्भ्रातरः ।
Say female planets are in the 9th house. Then the person has sisters. If male planets are there, the person has brothers.
ज्ञेज्यौ धने कन्यायां राहौ भ्रातृत्रयम् ।
Say Mercury and Jupiter are in the 2nd house and Rahu is in Virgo. Then the person has three brothers.
विक्रमेशारौ त्रिकस्थौ भ्रातृहीनः ।
Say the lord of the 3rd and Mars are in the trika (group of three houses). That is the 6th, 8th or 12th. Then the person has no brothers.
षष्ठे सोत्थपारौ पापभगौ पापयुतौ वा भ्रातर उत्पद्य नश्यन्ति ।
Say the lord of the 3rd and Mars are in the 6th house. They are in the sign of a bad planet or joined by bad planets. Then brothers are born and die.