What is the ruling on fasting when rinsing the mouth and a small amount of blood comes out due to dryness of the throat, while trying not to let water enter?

Rinsing the mouth is recommended for a fasting person without exaggeration. Any residual water in the mouth after rinsing is excused. The emission of blood from the mouth does not affect the fast unless it is swallowed intentionally. If blood from the throat reaches the mouth, it must be expelled and not swallowed. If some of it reaches the stomach unintentionally, the fast is not invalidated. If it does not reach the mouth and enters the stomach directly from the throat, there is no harm in it.