SB 11.18.12

yadā — when; karma — by fruitive activities; vipākeṣu — in all that which is obtained; lokeṣu — including promotion to all the planets of the universe up to Brahmaloka; niraya-ātmasu — planets that are actually hellish, being material; virāgaḥ — detachment; jāyate — is born; samyak — completely; nyasta — giving up; agniḥ — the sacrificial fire of vānaprastha; pravrajet — one should take sannyāsa; tataḥ — at that point.