Abu Talib disliked persecution very much. In the meantime, he liked the persecuted a lot. So, our Master Muhammad [s] liked Abu Talib very much.
One day, a battle took place between the tribe of Kinana and the tribe of Qais. The tribe of Qais was the aggressor.
A man from the tribe of Kinana came to Abu Talib and said:
"Son of the bird feeder and pilgrim water-giver; don't be absent from us. We get victory in your presence."
Abu Talib answered:
"I will not be absent from you when you avoid persecution, enmity, rudeness and falsehood."
So, they promised him to do that.
Our Master Muhammad [s] stood by his uncle, against Kinana.