Alas, how shall I take shelter of one more merciful than He who granted the position of mother to a she-demon [Pūtanā] although she was unfaithful and she prepared deadly poison to be sucked from her breast?
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
अहो बकी यं स्तनकालकूटं जिघांसयापाययदप्यसाध्वी । लेभे गतिं धात्र्युचितां ततोऽन्यं कं वा दयालुं शरणं व्रजेम
aho bakī yaṃ stanakālakūṭaṃ jighāṃsayāpāyayadapyasādhvī | lebhe gatiṃ dhātryucitāṃ tato'nyaṃ kaṃ vā dayāluṃ śaraṇaṃ vrajema
SB 3.2.23