Ali bin Abu Talib reported,

Fatimah, peace be upon her, came to the Prophet ﷺ complaining about the hardship she suffered in her hands from grinding with the millstone. She had heard that some captives had been brought to him, but she did not find him at home, so she mentioned the matter to Ayesha. When the Prophet ﷺ returned, Ayesha informed him.Ali said, "He came to us after we had already gone to bed. We started to get up, but he said, 'Stay where you are.' Then he came and sat down between her and me, until I felt the coolness of his feet on my stomach.He said, 'Shall I not guide you to something better than what you asked for? When you go to bed, or when you retire to your sleeping place, say Subhan Allah thirty-three times, Alhamdulillah thirty-three times, and Allahu Akbar thirty-four times. That is better for you than a servant.'"

Bukhari 5361

Sahih

حدثنا مسدد حدثنا يحيى عن شعبة قال حدثني الحكم عن ابن أبي ليلى

حدثنا علي

أن فاطمة عليهما السلام أتت النبي ﷺ تشكو إليه ما تلقى في يدها من الرحى وبلغها أنه جاءه رقيق فلم تصادفه فذكرت ذلك لعائشة فلما جاء أخبرته عائشة قال فجاءنا وقد أخذنا مضاجعنا فذهبنا نقوم فقال على مكانكما فجاء فقعد بيني وبينها حتى وجدت برد قدميه على بطني فقال ألا أدلكما على خير مما سألتما إذا أخذتما مضاجعكما أو أويتما إلى فراشكما فسبحا ثلاثا وثلاثين واحمدا ثلاثا وثلاثين وكبرا أربعا وثلاثين فهو خير لكما من خادم

البخاري 5361صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Bukhari
Book
Expenditures
Chapter
Work of a woman in her husband's house
Numbering
Darussalam 5361
Bukhari 5361