Umm Sulaim came upon the Prophet and said: "Teach me some words that I can say in my Salat." So he said: "Mention Allah's Greatness (saying: Allahu Akbar) ten times, mention Allah's Glory (saying: Subhan Allah) ten times, and mention Allah's praise (saying: Al-Hamdulilah) ten times. Then ask as you like, (for which) He says: 'Yes. Yes.'"
أَنَّ أُمَّ سُلَيْمٍ غَدَتْ عَلَى النَّبِيِّ ﷺ فَقَالَتْ عَلِّمْنِي كَلِمَاتٍ أَقُولُهُنَّ فِي صَلاَتِي فَقَالَ كَبِّرِي اللَّهَ عَشْرًا وَسَبِّحِي اللَّهَ عَشْرًا وَاحْمَدِيهِ عَشْرًا ثُمَّ سَلِي مَا شِئْتِ يَقُولُ نَعَمْ نَعَمْ قَالَ وَفِي الْبَابِ عَنِ ابْنِ عَبَّاسٍ وَعَبْدِ اللَّهِ بْنِ عَمْرٍو وَالْفَضْلِ بْنِ عَبَّاسٍ وَأَبِي رَافِعٍ