بسم الله الرحمن الرحيم
Question: Is it allowed for the one who breaks his fast during the day in Ramadhan due to a legislated sharia excuse to (continue) eating and drinking for the rest of the day?
Shaykh Uthaymeen answered:
It is permissible for him to eat and drink because he broke his fast due to a legislated sharia reason. If he breaks the fast due to a legislated sharia reason, then the prohibition from eating on that day ceases in his case, and it becomes permissible for him to eat and drink; as opposed to the man who breaks his fast without a (legislated shiria reason), for indeed we make it binding on him to refrain (from food and drink), even if it is binding on him to make it up (as well). Therefore, it is obligatory to pay attention to the difference between these two affairs.
” مجموع فتاوى الشيخ ابن عثيمين ” ( 19 / السؤال رقم 60 )