Jataka Tattva · by Mahadeva
Chapter 5 · Brothers and Livelihood: the 3rd House
सहजविवेकः
लग्नलग्नेशान्यतरतस्त्र्यायगैर्ज्ञेन्द्वारेज्यैर्बहुभ्रातरः केतौ तु बहुभगिन्यः ।
Count from the lagna (rising sign) or from the lagna lord, whichever applies. Say Mercury, the Moon, Mars and Jupiter are in the 3rd and 11th houses. Then the person has many brothers. If Ketu is there, the person has many sisters.
सोत्थेशे स्वर्क्षे सौम्यदृष्टे भ्रातृमान् ।
Say the lord of the 3rd is in its own sign and a good planet aspects it. Then the person has brothers.
सोत्थपे सशुभे केन्द्रे भ्रातृसुखम् ।
Say the lord of the 3rd is in a kendra (corner house) with a good planet. Then the person has happiness from brothers.
सोत्थे शुभैर्युते वा दृष्टे सोत्थपे बलिनि भ्रातृलाभः ।
Say the 3rd house is joined or aspected by good planets, and its lord is strong. Then the person gains through brothers.