Sahih Muslim | Book 9 | Hadith Number 3560

Narrated by Sa'id b. Jubair
Sa'id b. Jubair reported that Mus'ab b. Zubair did not effect separation between the Mutala'inain (invokers of curses). Sa'id said: It was mentioned to 'Abdullah b. Umar (Allah be pleased with them) and he said: Allah's Apostle (may peace be upon him) effected separation between the two members of Banu al-'Ajlan.