Abdullah bin 'Awn bin Artaban عبد الله بن عون بن أرطبان الخزار · The Book of ad-Dahaya (Sacrifices)

the Messenger of Allah gave him some sheep to distribute among his Companions. A small goat was left over and he mentioned that to the Messenger of Allah. He said: "Sacrifice it yourself."

"I saw 'Ali bin Abi Talib - may Allah honor his face on the day of 'Id. He started with the prayer before the Khutbah, and then he prayed with no Adhan and no Iqamah. Then he said: 'I heard the Messenger of Allah forbidding anyone form keeping anything of his sacrificial animal for more than three days." (Sahih )

"Do not take anything that has a soul as a target."