It is unpraiseworthy to motion the hands in Taslim in the prayer

 311. Jabir bin Samurah narrated: When we performed prayer with the Messenger of Allah sallahu alayhi wa sallam, we said: ´´Assalamu ´Alaikum wa Rahmatullah (May safety and security be granted to you and mercy of Allah),´´ and motioned our hands on both the sides. Upon this the Messenger of Allah sallahu alayhi wa sallam said: ´´Why do you motion your hands as if they are the tails of headstrong horses? It is enough for you to place your hand on your thigh and then make Taslim to his brother on the right side and then on the left.´´