Ikrimah (may Allah have mercy on him) says that once I saw a man who entered the mosque and began to pray standing; he would say the takbeer while raising his head, bowing, and rising from the two rak‘ahs. Finding this strange, I mentioned this incident to Sayyiduna Ibn Abbas (may Allah be pleased with them both). Sayyiduna Ibn Abbas (may Allah be pleased with them both) said, "May your mother lose you! The prayer of the Prophet (peace and blessings of Allah be upon him) was like this."