Is the prostration of recitation valid if a person prostrates on the side of his hand to hold the Mushaf, and is that valid in prayer, and what is the ruling on the prayer if it is said that this prostration is invalid?

The worshiper must prostrate on the seven limbs in moderation, as ordered by the Prophet, peace and blessings be upon him. If he holds a Mushaf (copy of the Quran) in his hand when prostrating, he must place it in an appropriate place and then prostrate. If he prostrates while holding the Mushaf in one hand, leaning on it, this does not affect the validity of his prostration, as it is not a condition for the entire limb used for prostration to make contact; it is sufficient for part of the limb to be placed on the ground. Even if he prostrates on the backs of his hands or the tips of his fingers, it is sufficient.