Not doing sujood al-sahw in order to ward off waswaas (insinuating whispers from the Shaytaan)
Question

                He always gets confused whilst praying [as to how many rak’ahs he has done]. Should he act on the basis of what he is certain of or what he thinks is most likely? This happens to him a lot, so should he forgo doing sujood al-sahw (prostration of forgetfulness) in order to ward off waswaas (insinuating whispers from the Shaytaan)?
Praise be to Allah.We 
          put this question to Shaykh Muhammad ibn Saalih al-‘Uthaymeen, may Allaah 
          preserve him, who answered as follows: 
He should not pay attention to 
          those doubts and he should not do sujood al-sahw for them, because too 
          many doubts lead to waswaas.