Abu Huraira reported that Fatima came to Allaah's Prophet (sallAllaahu alayhi wa sallam) and asked for a servant and told him of the hardship of household work. He said: You would not be able to get a servant from us. May I not direct you to what is better than the servant for you? Recite Subhaana Allaah thirty-three times, al- Hamdu li-Allaah thirty-three times and Allaah-o-Akbar thirty-four times as you go to bed [Muslim, 6580].