Musannaf Ibn Abi Shaybah 39465 — The great Battle of Badr, how it came

It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that when he (peace and blessings be upon him) had finished with Badr, it was said to him (peace and blessings be upon him): "You must go after the caravan; there is nothing else." (That is, seize the caravan as well.) Then Sayyiduna al-Abbas (may Allah be pleased with him), who was bound in fetters, called out to him (peace and blessings be upon him): "This is not right." He (peace and blessings be upon him) asked: "Why?" Al-Abbas said: "Allah Almighty promised you one of the two groups, and Allah Almighty has given you what He promised."