Imam As Si’adi said regarding the Athkaar after the prescribed prayers:
“Meaning that the prayer is a polishing of the heart, and the remembrance after it is a wipe for it, thus it becomes complete in cleanliness, it is (also) a symbol for the prayer and a sign that one has finished it (the prayer)”
[Umdatul Ahkaam page 167]
If anyone has cleaned or polished something before, he would realize the beauty of that Statement for applying polish is one thing, and wiping and spreading that polish shines it to a different extent.
Majid Jawed Al-Afghanee