Reference: Fataawa Ramadhaan v2 p525 no.492
Fataawa Shaykh Ibn ‘Uthaymeen v1 p511-512
Question: Does an anaesthetic injection into the body break the fast? [And likewise] the blood flow after having a tooth extracted?
Response: Neither of these two breaks the fast, however, one must not swallow the blood which flows from [having] the tooth [removed].
