What is the ruling on the prayer of one who finds extreme difficulty in covering their awrah due to the transparency or exposure of their clothes during bowing and prostration, and is this considered to be whisperings (waswasah)?

It is advisable to disregard obsessive thoughts related to covering the 'awrah (private parts) during prayer. Prayer is valid when performed in a garment that conceals the color of the skin, and even if the skin's color becomes visible upon close inspection, the prayer is disliked but not invalidated. The fact that a garment might reveal the color of what is beneath it, or that one's 'awrah might become visible if someone were to look from below, does not cause harm; for it is not obligatory to cover the 'awrah from below, and the matter in this regard is simpler than what obsessive thoughts might lead one to imagine.