Looking at Ali (may Allah be pleased with him) is worship

It is narrated from Jurayy bin Kulayb al-Amiri that when Sayyiduna Ali (may Allah be pleased with him) set out for Siffin, I disliked the fighting, so I came to Madinah and presented myself before the Mother of the Believers, Sayyidah Maymunah bint al-Harith (may Allah be pleased with her). She asked: "Where are you from?" I said: From the people of Kufah. She asked: "From which tribe?" I said: From Banu Amir. She said: "Welcome, may your coming be blessed. What brings you here?" I said: Sayyiduna Ali (may Allah be pleased with him) has set out for Siffin, and I disliked the war, so I came here. She asked: "Had you given him your pledge of allegiance?" I said: Yes. She said: "Then go back to him and stay with him. By Allah! He has neither gone astray himself, nor has anyone gone astray through him."
This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), but they did not record it.

It is narrated from Sayyiduna Imran bin Husayn (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Looking at Ali is worship."
This hadith has a sahih (authentic) chain of narration, and its supporting reports (shawahid) narrated from Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) are also sahih.

It is narrated from Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Looking at the face of Ali is worship." Amr bin Murrah has also corroborated (mutaba'ah) this narration through Ibrahim al-Nakha'i.