It is disliked for the one praying to fan himself during the prayer

Question : And fanning himself, fanning himself

Answer : is what is meant by it. It means to fan oneself with a fan. It is derived from the word for wind, meaning air.
The fan is well known; it was originally made from palm fronds, which were woven and fitted with a wooden handle, and a person would fan himself with it. This is disliked because it is a type of play and movement that distracts a person from his prayer. However, if there is a need for it, such as if a person is heavyset and is afflicted with severe heat and stuffiness, and he fans himself to alleviate the burden of the prayer or the burden of standing in the prayer, then there is nothing wrong with it. This is because the principle among jurists is that a disliked act is removed by need. As for fanning oneself by shifting the weight between the feet, where one relies on one foot at times and the other foot at times, there is nothing wrong with that, especially if the standing is prolonged. If a person’s standing is prolonged, he should rest himself by relying slightly on one foot and slightly on the other, but without bringing one foot forward of the other. Rather, the two feet should be equal, but he relies on one at a time and the other at another time, without doing it excessively.