It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) that when the Messenger of Allah (peace and blessings be upon him) had finished (dealing with) the slain, it was said to him (peace and blessings be upon him): "Go after the caravan; there is now nothing standing in its way." Sayyiduna Abbas (may Allah be pleased with him), while he was bound as a captive, called out to him (peace and blessings be upon him): "That is not right for you." He (peace and blessings be upon him) asked: "Why?" He said: "Because Allah promised you one of the two groups, and He has already fulfilled for you what He promised you (meaning that pursuing the caravan is no longer part of the promise)." The chain of this hadith is sahih (authentic), and the two Shaykhs did not record it.