Answered by Ustadh Tabraze Azam
Question: As salam alaykum,
Is my fast broken if I accidentally swallow water?
Should I have to start again the expiation from the beginning if this happens whilst fasting for an expiation?
Answer: Wa alaikum assalam wa rahmatullah,
I pray this finds you well, insha’Allah.
(1) Yes, if you accidentally swallow some water during a fast, it would vitiate your fast and you would need to make it up.
(2) Yes, if this happens during the expiation (kaffara), then you would need to restart from the beginning.
Please also see: When Is Expiation Required For A Fast?
And Allah knows best.
Checked & Approved by Shaykh Faraz Rabbani