Sahih al-Bukhari 7109

Sufyan said, "Abu Musa Isra'il narrated to us. I met him in Kufa. He went to Ibn Shubruma\* and said, 'Take me to 'Isa\*\* so that I can adominish him.' It was as if Ibn Shubruma feared for him and so he did not do it." He said, "Al-Hasan narrated to us and said, 'When al-Hasan ibn 'Ali moved against Mu'awiya with squadrons, 'Amr ibn al-'As said to Mu'awiya, 'I see squadrons which will not retreat until the other force retreats.' Mu'awiya said, 'Who will look after the children of the Muslims?' He said, 'I will.' Then 'Abdullah ibn 'Amir and 'Abdu'r-Rahman ibn Samura said, 'We should meet with him and speak to him about peace.'" Al-Hasan said, "I heard Abu Bakra say, 'While the Prophet, may Allah bless him and grant him peace, was addressing us, al-Hasan came and the Prophet, may Allah bless him and grant him peace, said, 'This son of mine is a chief and it may be that Allah will bring about peace between two parties of Muslims by him.'" [\* The Qadi of Kufa under al-Mansur. \*\* 'Isa ibn Musa, the governor of Kufa]