Prabhupāda: So then Caitanya Mahāprabhu said, that "Such kind of learned brāhmaṇas and Vedic yajña is not possible in this age. Therefore cow killing..." Not cow killing. "Sacrifice by offering cow, sacrifice by offering horse, and..." Aśvamedhaṁ gavālambhaṁ (CC Adi 17.164). And sannyāsaṁ pala paitṛkam. Sannyāsa means to become in the renounced order of life. And these five things. One thing is sacrifice by offering cow. Second, sacrifice by offering horse. Third, to accept renounced order of life. And fourth, offering ablutions... Or what is called? Offering some, something to the forefathers? What is called?
Hayagrīva: Oblations.
Prabhupāda: Oblations. Yes. This, and to beget child by the husband's younger brother. Formerly, the society allowed that if a woman is young, she has no child, but husband died, so if the husband has younger brother, through the younger brother she could have a child. This system was current. But Caitanya Mahāprabhu says that these five things are forbidden in this age. So Chand Kazi also replied that "Cow killing is also not generally recommended in the Koran. Actually, beef-eating or flesh-eating is not in the higher stage. But those who are inclined to take flesh, for them it is recommended that instead of killing many small animals, one big animal should be killed.