Sukadeva Gosvami said: Deliberating in this way, Kamsa, although determined to continue in enmity toward the Supreme Personality of Godhead, refrained from the vicious killing of his sister - SB 10.2.23

Expressions researched:
"Śukadeva Gosvāmī said: Deliberating in this way, Kaṁsa, although determined to continue in enmity toward the Supreme Personality of Godhead, refrained from the vicious killing of his sister"

Srimad-Bhagavatam

SB Canto 10.1 to 10.13

Śukadeva Gosvāmī said: Deliberating in this way, Kaṁsa, although determined to continue in enmity toward the Supreme Personality of Godhead, refrained from the vicious killing of his sister.

SB 10.2.23, Translation

Śukadeva Gosvāmī said: Deliberating in this way, Kaṁsa, although determined to continue in enmity toward the Supreme Personality of Godhead, refrained from the vicious killing of his sister. He decided to wait until the Lord was born and then do what was needed.