It is narrated from Sayyiduna Ali (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) forbade temporary marriage (mut'ah) and the meat of domesticated donkeys during the time of the Battle of Khaybar.

Zirr bin Hubaish says that (Ibn Jurmuz sought permission to enter upon Sayyiduna Ali, may Allah be pleased with him. Sayyiduna Ali, may Allah be pleased with him, asked, "Who is it?") The people informed him that Ibn Jurmuz wanted to come in. He said: Let him come in. The killer of Sayyiduna Zubair, may Allah be pleased with him, will enter Hell. I heard the Prophet, peace and blessings be upon him, say: "Every prophet has a special disciple, and my disciple is Zubair."

Abdullah bin Al-Harith says that once Sayyiduna Uthman Ghani (may Allah be pleased with him) came to Makkah Mukarramah and camped at a place called Qudayd. Horse meat was brought to him in large pots. Sayyiduna Uthman Ghani (may Allah be pleased with him) called Sayyiduna Ali (may Allah be pleased with him). Sayyiduna Ali (may Allah be pleased with him) came while dusting off his hands, but he did not eat that food. The people also withheld their hands. Then Sayyiduna Ali (may Allah be pleased with him) said: Is there anyone from the tribe of Ashja’ present here? Do you know that a Bedouin once presented some ostrich eggs and dried meat of a wild animal to the Prophet (peace and blessings be upon him), so the Prophet (peace and blessings be upon him) said:“Feed this to your family, for we are in the state of Ihram.”The people said, why not. Seeing this, Sayyiduna Uthman Ghani (may Allah be pleased with him) got up from the dining spread and went to his tent, saying that now a dislike has arisen in this for us as well.

It is narrated from Sayyiduna Ali (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "The angels of mercy do not enter a house in which there is a picture or a dog."

It is narrated from Sayyiduna Ali (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) forbade gold rings, silk, and red saddle cloths.

It is narrated from Sayyiduna Ali (may Allah be pleased with him) that the Prophet (peace and blessings of Allah be upon him) forbade anyone from raising his voice while reciting (the Qur'an) before or after 'Isha, because in this way his other companions might become confused while praying.

It is narrated from Sayyiduna Ali (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "An 'abd mukatab'—that is, a slave with whom the master has made an agreement for freedom upon payment of a specified amount—he will be entitled to the same proportion of blood money as the amount he has paid."

It is narrated from Sayyiduna Ali (may Allah be pleased with him) that the Prophet (peace and blessings of Allah be upon him) gave in the dowry of Sayyidah Fatimah (may Allah be pleased with her) a coarse cloth, a water skin, and a leather pillow stuffed with idhkhir grass, as well as two hand mills and two water pots.

Sa’d (may Allah have mercy on him) says that Yuhnas and Safiyyah were both among the captives of the khums. Safiyyah committed adultery with another man from the khums and gave birth to a child. Both the adulterer and Yuhnas claimed the child, and they brought their case before Sayyiduna ‘Uthman Ghani (may Allah be pleased with him). He sent both of them to Sayyiduna ‘Ali (may Allah be pleased with him). Sayyiduna ‘Ali (may Allah be pleased with him) said:“I will judge between you as the Prophet (peace and blessings be upon him) judged, and that is: the child belongs to the owner of the bed, and for the adulterer there are stones.”Then he gave both of them fifty lashes each.

The mother of Amr bin Salim says: We were in the plain of Mina when we heard a man announcing that the Messenger of Allah, peace and blessings be upon him, has said: "These are days of eating and drinking, so no one should fast on these days." I lifted the curtain of my tent and saw that the one making the announcement was Sayyiduna Ali, may Allah be pleased with him.