Is it obligatory for all toes to touch the ground during prostration (sujud), and do prostration and prayer become invalid if some of them do not touch the ground?

One must prostrate on the seven organs of prostration, which are: the forehead—along with the nose—, the hands, the knees, and the toes; based on the saying of the Prophet, peace and blessings be upon him: "I have been commanded to prostrate on seven bones: on the forehead—and he pointed with his hand to his nose—, the hands, the knees, and the toes." Prostrating on them is a pillar if one is able, and whoever omits one of these organs, their prayer is invalid.

The perfection is to include the entire organ, such as orienting the tips of the toes towards the Qibla. However, whoever prostrates on part of an organ, such as a portion of the forehead or some of the toes, their prayer is valid, but it is better to firmly place and encompass the organ as much as possible.