Fatimah came to the Prophet ﷺ asking him for a servant and complaining about the hardship of housework.He said, "You will not find one with us."Then he said, "Shall I show you something better than a servant? When you take to your bed, say SubhanAllah thirty-three times, Alhamdulillah thirty-three times, and Allahu Akbar thirty-four times."
أن فاطمة أتت النبي ﷺ تسأله خادما، وشكت العمل فقال: ما ألفيتيه عندنا. قال: ألا أدلك على ما هو خير لك من خادم؟ تسبحين ثلاثا وثلاثين، وتحمدين ثلاثا وثلاثين، وتكبرين أربعا وثلاثين حين تأخذين مضجعك.
Muslim narrated it in the chapters on remembrance and supplication (2728) from Umaya bin Bistam Ayshi, who said, "Yazid, meaning Ibn Zuray, narrated to us, saying, 'Rawh bin Qasim narrated to us, from Suhayl, from his father, from Abu Hurairah,'" and he mentioned it.