Assalāmu alaykum I saw a video of Shaykh Muhammad Hisham al-Tahri demonstrating wudu. When he rinsed his mouth and inhaled water, he said not to make any noise. is making noise during rinsing or inhaling in wudu considered makruh? or is it just a matter of etiquette? I am not sure what he meant?

Ustadh AbdulAziz al-Haqqan
I do not know