question #1 Sahih Muslim 362, Book 3, Hadith 126 : What should a person do if they are uncertain about breaking their wudu during prayer?

The Messenger of Allah (ﷺ) said: If any one of you has pain in his abdomen, but is doubtful whether or not anything has issued from him, be should not leave the mosque unless he hears a sound or perceives a smell.