Jatakaparijata 13.7

13.7

atha sthalāmbujaniyogakarī grahasthitiḥ |
khage dṛkaṇe balasaṃyutena vā graheṇa yukte carabhāṃśakodaye |
budhāṃśake vā vihagāḥ sthalāmbujāḥ śanaiścarendvīkṣaṇayogasaṃbhavāḥ ||

Now, the planetary configuration causing terrestrial or aquatic birth:
When a bird decanate is rising, or combined with a planet possessing strength, when a moveable navāṃśa is rising,
or in a navāṃśa of Mercury, birds are born; terrestrial and aquatic creatures arise from the aspect and combination of Saturn and the Moon.