Devakī helplessly, piteously appealed to Kaṁsa: My dear brother, all good fortune unto you. Don’t kill this girl. She will be your daughter-in-law. Indeed, it is unworthy of you to kill a woman.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
तमाह भ्रातरं देवी कृपणा करुणं सती । स्नुषेयं तव कल्याण स्त्रियं मा हन्तुमर्हसि
tamāha bhrātaraṃ devī kṛpaṇā karuṇaṃ satī | snuṣeyaṃ tava kalyāṇa striyaṃ mā hantumarhasi
SB 10.4.4