Umm Sulaym came to the Prophet ﷺ and said, "Messenger of Allah, teach me words to say in my prayer."He said, "Glorify Allah ten times, praise Him ten times, then ask Him for what you need. He will say, 'Yes, yes.'"
جاءت أم سليم إلى النبي ﷺ فقالت: يا رسول الله علمني كلمات أدعو بهن في صلاتي. قال: سبحي الله عشرا، واحمديه عشرا، ثم سليه حاجتك يقل نعم نعم.
Nasai (1299) and Tirmidhi (481) both narrated it through Ikrima bin Ammar, from Ishaq bin Abdullah bin Abu Talha, from Anas, who mentioned something similar. Its isnad is hasan because of Ikrima bin Ammar, since his hadith is hasan. Nasai gave it the chapter heading, "Remembrance after the tashahhud."