Is the mark on the forehead of the one who prays a sign of the righteous?

The questioner : Yes. Honorable Shaykh, peace be upon you and Allah's mercy and blessings. After that, in the night prayer, we prolong the prostration. Does a person rest by pressing on his hands or on his forehead? And is the mark on his forehead a sign of the righteous?

The Shaykh : The answer is that a person rests on all the limbs in prostration, based on the saying of the Messenger (peace and blessings be upon him) so they are equal, and one does not bear the weight of the other. That is to say, the two palms, the forehead, and the nose are equal. As for his question about the mark that appears on the forehead, whether it is from the practices of the righteous, we say: No.
Rather, the sign of the righteous is the light of the face, the expansion of the chest, good character, and the like of what appears on the face. As for this mark, some people have it on them even though they have only prayed the obligatory prayers. This is because their skin is thin. And some people pray and prolong their prostration, yet this mark does not appear on them. The mark that Allah referred to in His saying is what appears on the face in the form of light and composure.