Is a child’s vomiting considered one of the impurities?

Question:
Honorable Shaykh, is it permissible to pray in a garment that has a child’s vomit on it?

Answer:
It is not permissible to pray in a garment that has been affected by vomit, whether from a child or from anyone else, because vomit is ritually impure as it comes out of the stomach, so it is ritually impure. Therefore, it must be washed. If one prays while wearing a garment with vomit on it, his prayer is invalid if he did so intentionally. However, if he was forgetful, unaware, or ignorant and prayed, his prayer is valid. But if he was intentional and knew, or was aware that the vomit was on his garment and prayed while knowing that, his prayer is invalid. Yes.