Answered by Shaykh Faraz Rabbani
I’ve seen a custom of folding the right corner of a prayer rug once done with prayer. I heard if one doesn’t, shaytan will come near it or something similar. Is this practice mustahabb? Is it possible this is a bida? Please clarify if this has any basis in the Hadith and reference to one if possible.
Answer:
Walaikum assalam wa rahmatullah,
I’m not aware–after much research and asking of scholars from different lands–of any religious basis for this practice.
And Allah alone gives success.
Faraz Rabbani