Narrated by Anas Bin Malik states that a man asked the Prophet (peace be upon him): "O Messenger of Allah (pbuh)! When any one of us meets a Muslim brother or a friend, should he then bow his head (as a sign of courtesy to him)?" He (pbuh) said: "No." The man said: "Should he embrace and kiss him?" He (pbuh) said: "No." The man then asked: "Should he clasp his hands?" He (pbuh) said: "Yes."(Sunna Al-Tirmidhi Hadith No. 888)