A’mr Ibn Shaas Aslami, one of the companions present during the treaty of Hudaibiyah, narrates:
Once, Ali (a.s.) and I had embarked upon a journey towards Yemen. During the journey, I happened to get upset with him and my heart was filled with malice towards him.
As I returned from the trip, I proceeded to the mosque and complained to the people about his behaviour. Unfortunately, it so happened that my words eventually reached the ears of the Holy Prophet (s.a.w.).
One morning, on entering the mosque, I noticed the Holy Prophet (s.a.w.) present there together with a few of his companions. As soon as his eyes fell upon me, he gazed at me in anger and continued to do so till I had seated myself.
“O’ A’mr! By God, you have surely harassed me!” he said crossly.
I exclaimed, “I seek refuge in God from ever harassing or annoying you”.
He said, “Yes, you have troubled me for whoever has troubled Ali (a.s.) has troubled me too.”( Daastaan-hai Az Zindagi-e-Ali, pg. 112; Mustadrak al-Sahihain, vol. 3, pg. 122.)