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

It is narrated from Sayyiduna Ali (may Allah be pleased with him) that once I was present in the service of the Prophet (peace and blessings of Allah be upon him), when Sayyiduna Ammar (may Allah be pleased with him) came and began to seek permission to enter. The Prophet (peace and blessings of Allah be upon him) said, "Give him permission, welcome to the person who is pure and possesses purity."

Sayyiduna Ali (may Allah be pleased with him) narrates that on the occasion of the Battle of Badr, we saw that every one of us would fall asleep except the Prophet (peace and blessings be upon him), who kept praying under a tree and kept weeping until morning came. And on the day of the Battle of Badr, besides Sayyiduna Miqdad bin Aswad (may Allah be pleased with him), none of us was mounted on a horse.

Malik bin Umair says that one day Zaid bin Suhan came to the service of Sayyiduna Ali (may Allah be pleased with him) and after greeting, said: O Commander of the Faithful! Prevent us from those things from which the Prophet (peace and blessings of Allah be upon him) forbade you people. He replied: The Prophet (peace and blessings of Allah be upon him) forbade us from using gourds, green pitchers, wooden vessels, vessels made by hollowing out wood, and nabidh of barley (because wine was distilled in them), and also forbade silk, red saddle cloths, pure silk, and gold rings. Then he said that once the Prophet (peace and blessings of Allah be upon him) gifted me a silk garment. I wore it and went outside. When the Prophet (peace and blessings of Allah be upon him) saw this, he sent it to Lady Fatimah (may Allah be pleased with her) or to her aunt.

The previous hadith is also narrated through another chain.

On one occasion, Sayyiduna Ali (may Allah be pleased with him) addressed the people from the pulpit and said: O people! I heard the Prophet (peace and blessings of Allah be upon him) say, "Prayer is not invalidated by anything except hadath (minor impurity)." And I will not feel shy to explain to you what the Prophet (peace and blessings of Allah be upon him) did not feel shy to explain: hadath means that a person passes wind.

It is narrated from Sayyiduna Ali (may Allah be pleased with him) that one of the people of Suffa passed away. Someone said in the presence of the Messenger of Allah: O Messenger of Allah! He has left behind a dinar and a dirham as inheritance. The Prophet (peace and blessings be upon him) said: "These are two coals of Hell with which he will be branded. You should perform your companion's funeral prayer yourselves."

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 goes to visit a sick person, it is as if he is walking in the gardens of Paradise. When he sits by the sick person, he immerses himself in the ocean of Allah's mercy, and when he returns from there, seventy thousand angels are appointed for him who continue to pray for his forgiveness that day."

It is narrated from Sayyiduna Ali (may Allah be pleased with him) that when the Messenger of Allah (peace and blessings be upon him) used to stand upon seeing a funeral, we would also stand. Later, he himself began to remain seated, so we also began to remain seated.

It is narrated from Sayyiduna Ali (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Recite this supplication: «اَللّٰهُمَّ إِنِّي أَسْأَلُكَ الْهُدَى وَالسَّدَادَ» 'O Allah! I ask You for guidance and steadfastness.' And when you say the word 'guidance,' keep in mind the guidance of the path, and when you say the word 'steadfastness,' keep in mind the straightness of the arrow." Sayyiduna Ali (may Allah be pleased with him) also said that the Prophet (peace and blessings be upon him) forbade (the use of) silk, red saddle cloth, and wearing a ring on the index or middle finger.