Abu Bakr bin Abd al-Rahman bin al-Harith bin Hisham (may Allah have mercy on him) said that he heard Sayyiduna Abu Hurayrah (may Allah be pleased with him) say that the Messenger of Allah (peace and blessings be upon him) "would stand for the prayer (and he mentioned the hadith), then, when he rose after two rak'ahs, he would say the takbir."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 2803