Does drinking water by mistake after the Fajr call to prayer invalidate the fast, and does it require making up for that day, and what is the difference between it and breaking the fast out of forgetfulness?

If a fasting person drinks after the dawn has broken, believing that it is still night, there is a difference of opinion regarding the obligation of making up that day. The view that it is not obligatory to make up the day is the chosen opinion of Sheikh al-Islam Ibn Taymiyyah, and it is strong in its evidence, even though making it up is more cautious. It is recommended to seize blessed times for dhikr (remembrance of Allah), seeking forgiveness, and anything that brings one closer to Allah the Almighty.