aśvamedhaṁ gavālambhaṁ
sannyāsaṁ pala-paitṛkam
devareṇa sutotpattiṁ
kalau paĂąca vivarjayet

16 times this text was mentioned in purports to other texts: LBG(2) , LSB(9) , SB(1) , TLKS(4)

 aśva-medham - a sacrifice offering a horse; gava-ālambham - a sacrifice of cows; sannyāsam - the renounced order of life; pala-paitṛkam - an offering of oblations of flesh to the forefathers; devareṇa - by a husband's brother; suta-utpattim - begetting children; kalau - in the Age of Kali; paĂąca - five; vivarjayet - one must give up.


Text

“ ‘In this Age of Kali, five acts are forbidden: the offering of a horse in sacrifice, the offering of a cow in sacrifice, the acceptance of the order of sannyāsa, the offering of oblations of flesh to the forefathers, and a man’s begetting children in his brother’s wife.’

Purport

This is a quotation from the Brahma-vaivarta Purāṇa (Kṛṣṇa-janma-khaṇḍa 185.180).