Salaams
Just wanted to know if a child vomits more than a mouthful
and only 2-3 bits touch our clothes are we allowed to pray Salah in those clothes?
Are they paak?
Salaams
Al-jawab billahi at-taufeeq (the answer with Allah's guidance)
The vomit that is full mouth will be considered Najis (impure). (Shaami vol.1 pg.266)
If this is equal to a Dirham, which is the circumference of the inner hollow of the palm then it is Wajib (necessary) to wash this from your garments. If it is less than this amount then it will be Mustahab (preferable).
However, if one forgets this then Salah performed in such clothing will be valid.