Vayupurana 2.8.303

Vāyupurāṇa 2.8.303

kramād‌drumāṇāṃ jāyante vividhā nīlamakṣikāḥ.
tathā śuṣkavikārebhyaḥ putrikāḥ prabhavanti ca .. 8.303 ..