Is the fast of one who ate a few dates after suhoor but did not drink water, and the trace of the dates remained in his throat, and then he felt its taste with his saliva throughout the day, valid, or does he have to make up for it?

Whatever taste of dates a fasting person finds in their saliva after some time has passed and after rinsing their mouth, does not invalidate the

fast or prevent them from swallowing their saliva, due to the difficulty of guarding against it. Their fast is valid even if they intentionally swallow their saliva.