Sahih Muslim Book - 48, Hadith - 6918

حَدَّثَنِى أُمَيَّةُ بْنُ بِسْطَامَ الْعَيْشِىُّ حَدَّثَنَا يَزِيدُ - يَعْنِى ابْنَ زُرَيْعٍ - حَدَّثَنَا رَوْحٌ وَهُوَ ابْنُ الْقَاسِمِ عَنْ سُهَيْلٍ عَنْ أَبِيهِ عَنْ أَبِى هُرَيْرَةَ أَنَّ فَاطِمَةَ أَتَتِ النَّبِىَّ -صلى الله عليه وسلم- تَسْأَلُهُ خَادِمًا وَشَكَتِ الْعَمَلَ فَقَالَ « مَا أَلْفَيْتِيهِ عِنْدَنَا ». قَالَ « أَلاَ أَدُلُّكِ عَلَى مَا هُوَ خَيْرٌ لَكِ مِنْ خَادِمٍ تُسَبِّحِينَ ثَلاَثًا وَثَلاَثِينَ وَتَحْمَدِينَ ثَلاَثًا وَثَلاَثِينَ وَتُكَبِّرِينَ أَرْبَعًا وَثَلاَثِينَ حِينَ تَأْخُذِينَ مَضْجَعَكِ ».

It was narrated from Abu Hurairah that Fatimah came to the Prophet (s.a.w) to ask him for a servant, and she complained about her work. He said: "We do not have anything to give you.'' He said: "Shall I not tell you about something that is better for you than a servant? Say: 'Subhan Allah' thirty-three times, 'Al-hamdu Lillah' thirty-three times, and 'Allahu Akbar' thirty-four times, when you go to bed.''