However...

However, if the person forgets that he is fasting and swallows the water, or he gargles for reasons other than thirst – as in cases when gargling is recommended, such as in wuḍūʾ – and he unintentionally swallows the water, then there is no obligation for him to keep a qaḍāʾ fast; 10. someone who breaks his fast due to compulsion, necessity, or taqiyyah;[1] and if he breaks his fast due to compulsion or taqiyyah, then qaḍāʾ is due only if he was required to eat, drink, or have sexual intercourse.

Based on obligatory precaution, the same applies if he was required to break his fast by means other than eating, drinking, or having sexual intercourse.