Hadith 632
Sayyiduna Ibn Abbas (may Allah be pleased with them both) narrates that the Messenger of Allah (peace and blessings be upon him) said: "I have been commanded to prostrate on seven body parts, and (I have been commanded) not to gather my hair and clothes."
Hadith 633
Sayyiduna Ibn Abbas (may Allah be pleased with him) narrates from the Noble Prophet (peace and blessings be upon him) that he (peace be upon him) said: "I have been commanded to prostrate on seven bones, and not to gather (lift up) my hair and clothes."