Bhagavatapurana 10.1.49

10.1.49

pradāya mṛtyave putrān mocaye kṛpaṇām imām /
sutā me yadi jāyeran mṛtyur vā na mriyeta cet //

49. Making an offer of the sons (that may be born of her) to death, *i. e.*, to be killed by Kamsa, I shall rescue this helpless young lady. If sons should be born, there might be no death at all, if in the meanwhile he should die (in course of time).