Befriend whoever befriends him...
Befriend whoever befriends him, and be the enemy of whoever sets himself as his enemy; support whoever supports him, and forsake whoever forsakes him." One day, he looked at ‘Ali, Fatima, al-Hasan and al-Husayn (as) and said: "I fight whoever fights you, and I am peaceful unto whoever is peaceful to you." Having covered them with a blanket, he (pbuh) said: "I fight whoever fights you, and grant asylum to whoever seeks peace with you; I am an enemy of your enemy." There are many such traditions which quite a few companions did not implement; nay, the latter's actions contradicted their injunctions in preference of their own desires since they sought their own self-interest.
Those whose insight is keen know that all the very well-known traditions in honour of ‘Ali - which are several hundreds, such as the ones enjoining acceptance of his taking charge, forbidding everyone from becoming his enemy - are all proofs testifying to his great status and prestige, and to his lofty position in the eyes of Allah and His Messenger. We have narrated quite a few of them in these Letters, and what we have not narrated is many times more.
You are, by the Grace of God, among those who are very well familiar with traditions and their meanings. Have you found any tradition which enjoins opposition and enmity towards him, or any particular one indicative of harming him, hating him, or bearing animosity towards him, or anything like hurting him and wronging him, denouncing him from the Muslims' pulpits, or making that a tradition followed by the preachers who preach during Fridays and eids? Certainly not.
But those who did all of these things never paid any attention to such traditions in spite of their abundance and sequential narration. They did not hinder them from behaving in any way that would best serve their political interests.