What did the Prophet Muhammad (peace be upon him) instruct those who had not yet slaughtered their sacrifices on the day of Nahr?
 Narrated Jundab:                     On the day of Nahr the Prophet offered the prayer and delivered the Khutba and then slaughtered the sacrifice and said, "Anybody who slaughtered (his sacrifice) before the prayer should slaughter another animal in lieu of it, and the one who has not yet slaughtered should slaughter the sacrifice mentioning Allah's name on it."