Is rinsing the mouth and sniffing water into the nose obligatory for one who pours water over his body during the full ritual bath?

Al-Halabi : Well, Shaykh, regarding the issue of rinsing the mouth and sniffing water into the nose for one who pours water over himself?

The Shaykh : This is an issue that is, of course, addressed by another ruling, which is well known to us. One who holds that rinsing the mouth and sniffing water into the nose in the ablution is obligatory—and this is the position we adopt—says: In this case, one who pours water over himself without performing the ablution must rinse his mouth and sniff water into his nose, because the evidence establishes the obligation of doing so. As for one who holds that it is a recommended practice, the answer to that has already been given.