Sahih al-Bukhari 3908

It is related that al-Bara' said, "When the Prophet, may Allah bless him and grant him peace, came to Madina, Suraqa ibn Malik ibn Ju'shum followed him. The Prophet*, may Allah bless him and grant him peace, invoked against him and his horse sank into the ground with him. He said, 'Pray to Allah for me. I will not harm you,' and so he prayed for him." He said, "The Messenger of Allah, may Allah bless him and grant him peace, was thirsty and they passed by a shepherd. Abu Bakr said, 'I took a bowl and milked a little milk it and brought it to him and he drank up I was pleased.'"