Narrator:Abu Hurayrah
وَعَنْ أَبِي هُرَيْرَةَ قَالَ: جَاءَتْ فَاطِمَةُ إِلَى النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ تَسْأَلُهُ خَادِمًا فَقَالَ: «أَلَا أَدُلُّكِ عَلَى مَا هُوَ خَيْرٌ مِنْ خَادِمٍ؟ تُسَبِّحِينَ اللَّهَ ثَلَاثًا وَثَلَاثِينَ وَتَحْمَدِينَ اللَّهَ ثَلَاثًا وَثَلَاثِينَ وَتُكَبِّرِينَ اللَّهَ أَرْبَعًا وَثَلَاثِينَ عِنْدَ كُلِّ صَلَاةٍ وَعِنْدَ مَنَامِكِ» . رَوَاهُ مُسْلِمٌ
Abu Huraira said that when Fatima went to the Prophet and asked him for a servant, he said, “Let me guide you to something which is better than a servant. You should say ‘Glory be to God thirty-three times, ‘Praise be to God" thirty-three times, and ‘God is most great’ thirty-four times at each time of prayer and when you go to bed.” Muslim transmitted it.
Cited in Mishkat al-Masabih (No. 2388).