ANSWER:

You can alternate. Both are from the sunnah but surely 33 is more rewarding.

There is a hadith which mentions saying Subhan Allah, Alhamdulillah, & Allahu Akbar 10 times after every salah but there is also a hadith which mentions saying these same azkar 33 times each, after fardh prayer. Which of these two ahadith to follow? Should we say these 10 times or 33 times? Or can we alternate?

Prayer, Supplications |