Interlocking the fingers of the right hand during the dhikr of prayer

Question:
He says: Honorable Shaykh, may Allah grant you success, is there a basis in the Shari'ah for interlocking the fingers of the right hand only, and not the left, during the dhikr of prayer?

Answer:
I do not know of any specification of the right hand's fingers for interlocking them in tasbih; I do not know of any evidence for specifying that. However, some of them say that the right hand is honored and the left hand is used for removing harm, and that tasbih is a noble thing. They have only a rationale, but I do not know of any evidence. I do not know of any evidence to refute them. Even some of the common people refuted them, saying: "When I raise my hand to make du'a' for my father, do I raise only the right hand, or do I raise both hands? Am I wrong? When I prostrate, I prostrate on both hands; do I prostrate on the right hand only?" This indicates that they have no evidence for this; it is merely their personal preference, or