Musannaf Ibn Abi Shayba 23:183

Affan narrated to us, he said: Hammad bin Salamah narrated to us, he said: Al-Ash'ath bin Abd al-Rahman al-Jarmi informed us, from his father, from Samurah bin Jundub, that a man said to the Messenger of Allah, may Allah bless him and grant him peace: "I saw as if a bucket was lowered from the sky. Then Abu Bakr came and took hold of its two handles and drank, and there was weakness in it. Then Umar came and took hold of its two handles and drank until he was satiated."