It is narrated from Sayyiduna Ali (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) himself used to fast on the day of Ashura and would also encourage others to do so.

It is narrated from Sayyiduna Ali (may Allah be pleased with him) in a marfu’ form that whoever relates a false dream will be made to tie a knot in a grain of barley on the Day of Resurrection (he will be ordered to do so).

Sayyiduna Ali (may Allah be pleased with him) said that I used to have a lot of madhi (pre-seminal fluid). Since the daughter of the Prophet (peace and blessings be upon him) was married to me, I felt shy to ask the Prophet (peace and blessings be upon him) about this issue myself. So I asked Sayyiduna Miqdad (may Allah be pleased with him) to ask the Prophet (peace and blessings be upon him) about this issue. Accordingly, he asked about this issue, and the Prophet (peace and blessings be upon him) said: "Such a person should perform wudu (ablution)."

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 key to prayer is purification, the thing that makes lawful things unlawful in prayer is the opening takbeer (takbeer tahrimah), and the thing that makes them lawful again is the (final) salam."

It is narrated from Sayyiduna Ali (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Do not perform any prayer after the Asr prayer, except if the sun appears clear and bright, then it is permissible."

It is narrated from Sayyiduna Ali (may Allah be pleased with him) that when Abu Talib passed away, I went to the service of the Prophet (peace and blessings be upon him) and said, "Your old uncle has died." The Prophet (peace and blessings be upon him) said: "Go and hide him in a pit, and do not do any other work before coming to me." So when I had lowered him into a pit and returned to the Prophet (peace and blessings be upon him), he said to me: "Go and take a bath, and do not do any other work before coming to me." So I took a bath and presented myself in the court of the Messenger (peace and blessings be upon him), and the Prophet (peace and blessings be upon him) gave me so many supplications that I would not have been as happy to receive red or black camels in exchange. The narrator says that after this, whenever Sayyiduna Ali (may Allah be pleased with him) gave a bath to a deceased person, he would also take a bath himself.

It is narrated from Sayyiduna Ali (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever deliberately attributes a false statement to me, he should prepare his abode in Hell."

It is narrated from Sayyiduna Ali (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Do not perform any prayer after the Asr prayer, except if the sun appears clear and bright, then it is permissible."

It is narrated from Sayyiduna Ali (may Allah be pleased with him) that the king of Dumah al-Jandal—which is a region between Syria and Madinah—sent a silk garment as a gift to the Prophet (peace and blessings be upon him). The Prophet (peace and blessings be upon him) gave it to me and said: "Make headscarves from it and distribute them among the women."

Abdullah bin Saba’ says that once I heard Sayyiduna Ali (may Allah be pleased with him) saying:“This beard will surely be stained with the blood of this head. That wretched one who will kill me—what is he waiting for?”The people said:“O Commander of the Faithful! Tell us his name and address, we will wipe out his entire lineage.”He replied:“By Allah! In that case, you might kill someone other than my killer.”The people said:“Then at least appoint your deputy over us.”He said:“No, I will leave you in the same state as the Prophet (peace and blessings be upon him) left you.”The people said:“Then what answer will you give your Lord when you meet Him (regarding whom you appointed as caliph)?”He replied:“I will say: O Allah! As long as You willed, You kept me among them, then You called me to Yourself, and even then You were present among them. Now, if You wish, keep them united, and if You wish, create division among them.”