It is narrated from Hazrat Ka'b bin Ujrah (may Allah be pleased with him) that once the Noble Prophet (peace and blessings be upon him) came to me in the mosque while I was intertwining my fingers. The Noble Prophet (peace and blessings be upon him) said to me, "Ka'b! When you are in the mosque, do not intertwine your fingers, because as long as you are waiting for the prayer, you are counted as being in prayer."