Thabit al-Bunani (may Allah have mercy on him) said: Sayyiduna Anas bin Malik (may Allah be pleased with him) said to us: I will lead you in prayer like the prayer of the Messenger of Allah (peace and blessings be upon him), just as he used to lead us. Hammad (may Allah have mercy on him) said: Thabit (may Allah have mercy on him) said: You do not pray the way Anas (may Allah be pleased with him) used to lead us in prayer. When he (may Allah be pleased with him) raised his head from bowing, he would remain standing upright until one would think that he had forgotten, and when he rose from prostration and sat, one would also think that perhaps he had forgotten.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 2625