It is narrated from Hazrat Abu Huraira (may Allah be pleased with him) that, regarding prayer, I am the most similar to the Prophet Muhammad (peace and blessings be upon him) among all of you. When the Prophet Muhammad (peace and blessings be upon him) said "Sami' Allahu liman hamidah," he would say "Allahumma Rabbana wa lakal hamd." And whenever he would go into bowing (ruku'), or when he would raise his head from one prostration (sajdah) to perform the second prostration, or when he would stand up for the second rak'ah, at every such occasion he would say the takbeer.