Hazrat Abu Darda (رضی اللہ عنہ) has quoted that Hazrat Muhammad (ﷺ) said: Should I not tell you about such a deed that is better than all of your deeds, that is the most pure according to Your Lord, that will highlight your ranks, that is better than spending gold and silver in the path of Allah, and that in jehad if enemies kill you and the enemies kill you it is better than that? The companions (رضی اللہ عنہم اجمعین ) said, please tell us! Hazrat Muhammad (ﷺ) said, “that deed is the zikr of Allah.” (Tirmidhi)