Fatimah (may Allah be pleased with her) came to her father (may Allah's peace & blessings be upon him, his family & companions) (after she was married) and asked him for servants (to help with her housework). The Prophet (pbuh) said, 'Shall I not inform you of something that is better for you than a servant? Recite: 'Subhanallah (Glory be to Allah) thirty-three times, Al-hamdulillah (Praise be to Allah) thirty-three times, and Allahu Akbar (Allah is Great) thirty-four times before you go to bed'. (Bukhari)