Rib'i bin Hirash (may Allah have mercy on him) said that Sayyiduna Abu Musa (may Allah be pleased with him) fell unconscious, and his wife, the daughter of Abu Murrah, wept. When he came round, he said: I declare to you my freedom from that of which the Messenger of Allah (peace and blessings be upon him) declared himself free, that is, from whoever "beats his chest, tears out his hair and rends his garments."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الجنائز / 7120