Musannaf Ibn Abi Shaybah

Hazrat Wa'il bin Hujr narrates that one day I decided in my heart to carefully observe the method of prayer of the Holy Prophet (peace and blessings be upon him). So I saw that when the Holy Prophet (peace and blessings be upon him) performed prostration, he placed his blessed head between his two hands at the same spot where it was between his hands at the time of the opening takbeer, and both hands were near the ears.