Answered by Ustadh Tabraze Azam
Question: Can you breath in your own breath while fasting? for example, if you put your hand over your mouth and breathe then breath what comes off, would this break the fast? what about other peoples breath? Also what about the condensation from ones breath ( in cold weather)
Answer: Wa alaikum assalam wa rahmatullahi wa barakatuh,
I pray that you are well, insha’Allah.
No, breathing in one’s own breath would not break the fast. Only the entrance of something which has a perceptible body into the body cavity through a recognized point of entry, such as the mouth, would invalidate the fast.
Beware of satanic misgivings.
See: The Complete Guide to Fasting
And Allah alone gives success.
Checked & Approved by Faraz Rabbani