Brihat Jataka
धनुर्द्धरस्यान्त्यगते विलग्ने ग्रहैस्तदंशोपगतैर्बलिष्ठै: ॥ ज्ञेनार्किणा वोर्ययुतेन दृष्टे सन्ति प्रभूता अपि कोशसंस्था: ॥ ४-१५ ॥
If the lagna is the fag end of Sagittarius (ie there is in the Sagittarius lagna the navamsha also of Sagittarius--a mutable sign) and the planets are strong and occupy the navamshas .of mutable signs ie Sagittarius and Pisces and the lagna is also aspected by strong Mercury and Saturn, there are more than even 3 children in the womb.
english translation
dhanurddharasyAntyagate vilagne grahaistadaMzopagatairbaliSThai: ॥ jJenArkiNA voryayutena dRSTe santi prabhUtA api kozasaMsthA: ॥ 4-15 ॥
hk transliteration by Sanscript