Or out of diligence, he did not prostrate for it, contrary to what was made for him as an alternative and not obligatory, then the prayer is invalidated by neglecting it intentionally or by doing what was not prescribed for him to do intentionally. There is a difference between the middle session and the session of rest and the session that is between the two prostrations in each rak’ah. And the last sitting, and the ruling on all of that, is different, and it is considered in the blind, in the throne, in the lowest heaven, and on the earth when the servant sits in his seat, so the blind is for sitting between the two prostrations, and the throne is for the last sitting, and the sky is for the middle sitting, and with my sitting on the earth, where I was one of my sittings, for sitting for rest. As for the one who sat in the Witr prayer, what is his ruling? Ruling for the middle sitting, as it is not prescribed for him to leave it, but for the rest session, it is prescribed