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.

If the vānaprastha, understanding that even promotion to Brahmaloka is a miserable situation, develops complete detachment from all possible results of fruitive activities, then he may take the sannyāsa order of life.