Abu Hamzah Imran bin Abi Ata said: I was present at the death of Sayyiduna Ibn Abbas (may Allah be pleased with them both) in Ta'if. Muhammad ibn al-Hanafiyyah took charge of his preparation for burial, said four takbirs over him, lowered him into the grave from the side of his feet, and pitched a tent over his grave.
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 10528