Maharaja Nimi, who was expert in the science of spiritual knowledge, gave up his body. Vasistha, the great-grandfather, gave up his body also, but through the semen discharged by Mitra and Varuna when they saw Urvasi, he was born again

Expressions researched:
"Maharaja Nimi, who was expert in the science of spiritual knowledge, gave up his body. Vasistha, the great-grandfather, gave up his body also, but through the semen discharged by Mitra and Varuna when they saw Urvasi, he was born again"

SB Canto 9

After saying this, Mahārāja Nimi, who was expert in the science of spiritual knowledge, gave up his body. Vasiṣṭha, the great-grandfather, gave up his body also, but through the semen discharged by Mitra and Varuṇa when they saw Urvaśī, he was born again.

SB 9.13.6, Translation and Purport:

After saying this, Mahārāja Nimi, who was expert in the science of spiritual knowledge, gave up his body. Vasiṣṭha, the great-grandfather, gave up his body also, but through the semen discharged by Mitra and Varuṇa when they saw Urvaśī, he was born again.

Mitra and Varuṇa chanced to meet Urvaśī, the most beautiful prostitute of the heavenly kingdom, and they became lusty. Because they were great saints, they tried to control their lust, but they could not do so, and thus they discharged semen. This semen was kept carefully in a waterpot, and Vasiṣṭha was born from it.