Narada Purana (Jyotisha Selections) · by Vyasa
Chapter 2 · Signs, Planets, Birth
जातकम् १
सार्क्यारसिंहोज्ञाजांसे भांशतुत्यांगनालयुक् ।लग्नमिंदुं च सार्केंदु न पश्यति यदा गुरुः ॥ ७२ ॥
In the full Narada Purana (Purva Bhaga) this is chapter 55, verse 72.
Saturn or Mars may be with the lagna (rising sign). It may be in a Leo, Taurus or Aries navamsha (one-ninth part of a sign). Then the cord is wound round the child's limb. That limb matches the sign and the navamsha. Jupiter may not see the lagna or the Moon, or the Moon joined with the Sun. (Our text is unclear here: the word for Taurus is damaged.)
Simple meaning: A lagna in Leo, Taurus or Aries navamsha with Saturn or Mars can mean the cord wraps a limb.
सपापगोऽर्को जायो वा परवीर्यप्रसूतिकृत् ।
With these placements, the verse says the child may be from another man.
विदेशगः पितावृद्धः खेवा राशिवशात्यये ।
The father may be away or old. A full Moon in its own sign starts a rule for the place of birth.
द्यूनस्थे वा विधौ यातेंगना नारी प्रसूयते ।
A Moon in the 7th, or a watery Moon looking at a watery rising sign, sets up a birth by water.