It is the least and it does not suffice for him to investigate and prostrate. Some of them said that if it was the first thing he did, then his prayer was invalidated, but if it happens repeatedly, he should investigate and act on the basis of suspicion, then prostrate two prostrations after the salutation. Some people said that if he is in doubt, he does not have to return to certainty or investigate, but rather he only has to prostrate if Doubt, and what I go to in this matter is this last statement, even if it is more prudent to base it on certainty.

It is included in the consideration of this chapter.

The first thought, if a person knows it, relies on it, and doubt is the hesitation between two things or matters. Without preferring or preponderance of suspicion, the tendency to give preference to one of the doubtful people is without definiteness, and there is no recourse either to certainty or to the predominance of suspicion, for the ruling is for the owner