I ate some food and I drank some tea before praying ‘Asr. Whilst I was praying – more precisely, when I bowed – I burped and a small amount of liquid, like vomit, came out to the middle of my mouth, and I expelled it and wiped it with the edge of my shirt, and rubbed it. Is my prayer valid?

This is what came out of your stomach when burping called (Qulas), which is similar to vomit, but it is lighter than the ruling. The scholars differed concerning it in two matters: the first is Taharah, and the second is the revocation of wudoo '. The most correct is that it is pure and does not diminish ablution, and there is no proof of the uncleanness of vomit