Is the prayer of one who lost consciousness, then defecated, then cleaned it—even if a small amount remained—and performed ablution, then prayed, permissible?

Avoiding impurity during prayer is a condition, provided one has knowledge and ability. Thus, whoever prays with impurity on their body or clothes, while being aware of it and capable of removing it but fails to do so, their prayer is invalid and must be repeated according to the majority of scholars. However, if one is unable to remove it, their prayer is valid. If one is ignorant of the ruling, the majority of scholars hold that repetition is obligatory, and this is more cautious.