Does the phrase "during my prayer" in Umm Sulaym's Hadith restrict the ذكر (remembrance) and supplication mentioned therein to within the prayer only, or does it also include outside of it?

These remembrances, some of which are recited after the obligatory prayer, can be said during and after the prayer. It has been narrated in a hadith (definition): "O Umm Sulaym, when you pray the obligatory prayer, say: 'Subhanallah' ten times..." to the end of it. Her saying, "I say them in my prayer," means: at the end of my prayer.