Must prayers performed while passing wind due to pressure on the stomach during ablution and prostration be repeated, because the head was not gestured instead of prostrating?

The emission of wind nullifies ablution (wudu') and invalidates prayer (salat), unless it is continuous, such that it does not stop for a period allowing one to purify oneself and perform the prayer. In this case, it falls under the ruling of سلس (sals, continuous discharge): one performs ablution after the entry of the prayer time and prays, and the emission of wind does not harm them. However, if there is a time when the emission of wind stops, then the prayer must be delayed until that time. Thus, if a person experiences the emission of wind during ablution and prostration, their action of performing ablution for each prayer after its time has entered is correct. But if prostration is the sole cause of losing purity, then one must merely nod with the head instead of prostrating; because preserving a condition of prayer (purity) takes precedence over preserving one of its pillars (prostration). "It is obligatory to pray standing unless there is hardship or fear of harm in it or before it, like tayammum, or like the emission of wind." As for previous prayers, they do not need to be repeated, because ignorance is an excuse.