Does the ruling on gas incontinence apply to every prayer, or does its ruling continue for the rest of a person's life until they are cured? And is it correct not to repeat the prayer if gas is expelled only once during it?

The person afflicted with continuous flatulence is one who does not find sufficient time to perform prayer with proper purification. If the emission stops, he must wait for the period of cessation to perform the prayer. However, if his emission is continuous and does not stop, or if its cessation is irregular, then he is afflicted with incontinence. In this case, he must perform ablution for prayer after the time for it has begun and pray with this ablution the obligatory prayer and as many supererogatory prayers as he wishes until that time expires. What issues from him does not harm him, and his prayer is valid, and he is not required to repeat it.