If a person hears the sound of wind inside their stomach, but it does not exit through the anus, does their ablution remain valid or is it nullified?

If a person hears the sound of wind inside their stomach while performing ablution, their ablution is not invalidated by that, unless something comes out of them. This is based on the saying of the Prophet, peace and blessings be upon him: "If one of you finds something in his stomach and is unsure whether anything has come out of him or not, then he should not leave the mosque until he hears a sound or perceives an odor."