Saṁsāraḥ
संसारः
Karma and Rebirth
Through the ripening of the fruits of his actions he does not attain any rest, like a worm caught within a whirlpool. The desire for liberation arises in human beings at the end of many births, through the ripening of their past virtuous conduct.§
Śukla Yajur Veda, Paiṅgala Upanishad 2.11. UPR, 913§