What is the ruling on intentionally swallowing water during exaggerated gargling and sniffing while performing ablution for a scrupulous fasting person?

Dismiss these intrusive thoughts. If you wish to perform ablution while fasting, wash your face, rinse your mouth, and sniff water into your nose normally, without exaggeration. Any water that inadvertently reaches your throat will not harm you. Your fast is not invalidated, according to many scholars, even if you exaggerate and water enters your throat. Therefore, do not make up any fasts merely due to the illusion of water entering, and you are not required to make up the fast even if you are certain water entered.