Hakim bin Hizam (may Allah be pleased with him) says that the Messenger of Allah (peace and blessings of Allah be upon him) sent him to buy a sacrificial animal for one dinar. So he bought a sacrificial animal (then sold it for two dinars), thus making a profit of one dinar. Then he bought another animal for one dinar in its place. He came to the Messenger of Allah (peace and blessings of Allah be upon him) with the sacrificial animal and one dinar. The Prophet said: "Sacrifice the goat and give the dinar in charity." Imam Tirmidhi says:
We know the hadith of Hakim bin Hizam only through this chain, and in my view, Jubaib bin Abi Thabit’s hearing from Hakim bin Hizam is not established.