Sayyiduna Ali (may Allah be pleased with him) said: When a hadith of the Prophet (peace and blessings be upon him) is narrated before you, then think about it in the way that is upright, appropriate to it, and based on piety.

On one occasion, Sayyiduna Ali (may Allah be pleased with him) said: Shall I not tell you who is the best person in this Ummah after the Prophet (peace and blessings be upon him)? Sayyiduna Abu Bakr as-Siddiq (may Allah be pleased with him) and Sayyiduna Umar al-Faruq (may Allah be pleased with him).

It is narrated from Sayyiduna Ali (may Allah be pleased with him) that regarding what is stated in the Noble Qur’an: «﴿إِنَّمَا أَنْتَ مُنْذِرٌ وَلِكُلِّ قَوْمٍ هَادٍ﴾ [الرعد: 7] » "You are only a warner, and for every people there is a guide." The Prophet (peace and blessings be upon him) said about this verse: "The warner and the guide is a man from Banu Hashim."

Sayyiduna Ali (may Allah be pleased with him) narrates that on the day of the Battle of Badr, when the fighting began, we would seek refuge with the Prophet (peace and blessings be upon him); the Prophet (peace and blessings be upon him) was closer to the enemy than any of us, and on that day the Prophet (peace and blessings be upon him) fought the fiercest battle.

It is narrated from Sayyiduna Ali (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) forbade wearing a gold ring, silk clothing, or a garment dyed with safflower, and reciting the Noble Qur'an while in the state of bowing (ruku‘).

It is narrated from Sayyiduna Ali (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) forbade me from wearing a gold ring, silk clothing, or a garment dyed with safflower, and from reciting the Noble Qur'an while in the state of bowing (ruku‘).

Sayyiduna Ali (may Allah be pleased with him) narrates that the Prophet (peace and blessings of Allah be upon him) once ordered me to sell two slaves; they were brothers to each other. I sold them to two different men and then informed the Prophet (peace and blessings of Allah be upon him) about it. The Prophet (peace and blessings of Allah be upon him) said: "Go back and take them back, and sell both of them together to one man (so that they may have some closeness and companionship with each other)."

Abu Hayyah says that once I saw Sayyiduna Ali (may Allah be pleased with him) performing ablution. First, he washed and cleaned both his hands, then rinsed his mouth three times, put water into his nose three times, washed his face three times, washed his hands up to the elbows three times, wiped his head, washed both his feet including the ankles, and then took the leftover water from the ablution and drank it while standing, and said: I wanted to show you the way the Prophet (peace and blessings be upon him) performed ablution.

The previous hadith is also narrated through this second chain, however, at the end of it there is mention of taking the water for ablution with both hands.

It is narrated from Sayyiduna Ali (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) forbade sacrificing an animal with a broken horn or a cut ear.