Musnad Abu Ya'la al-Mawsili 1:113

Muhammad ibn Bashar narrated to us, Muhammad ibn Ja'far narrated to us, Shu'bah narrated to us, from Abu Ishaq al-Hamdani, who said: I heard al-Bara' ibn 'Azib say: When the Messenger of Allah (peace and blessings of Allah be upon him) came from Makkah to al-Madinah, Suraqah ibn Malik ibn Ju'sham followed him. The Messenger of Allah (peace and blessings of Allah be upon him) supplicated against him, so his horse sank into the ground. He said: "Supplicate to Allah for me, and I will not harm you." So he supplicated for him. Then the Messenger of Allah (peace and blessings of Allah be upon him) became thirsty, and they passed by a shepherd. Abu Bakr al-Siddiq said: So I took a vessel and milked into it a small amount of milk. I brought it to him, and he drank, then he drank until I was satisfied.