What is the ruling on the light air bubbles that come out of the anus after ablution as a result of strong food digestion?

The event that nullifies ablution is specified in the Sunnah. If a Muslim is certain that gas has been expelled, even if it is slight, his ritual purity is nullified. However, if he doubts or is uncertain about the matter, the basic principle is that his ritual purity remains valid, and the sudden doubt does not harm it. This is the view of the majority of scholars.