Abu Idrees al-Khulani أبو إدريس الخولاني · The Book of Purification

"Whoever performs Wudu' then let him sniff water in the nose and blow it out, and whoever uses small stones (to remove filth) then make it odd (numbered)."

"The Messenger of Allah (ﷺ) said: 'Whoever performs Wudu' and does it well, then says: "Ashhadu an la ilaha ill-Allah was ashhadu anna Muhammadan 'abduhu wa rasuluh (I bear witness that there is none worthy of worship except Allah, and I bear witness that Muhammad is his slave and Messenger)," eight gates of Paradise will be opened for him, and he may enter through whichever one he wishes.'"

"The Messenger of Allah (ﷺ) said: 'Whoever performs Wudu' and does it well, then prays two Rak'ahs in which his heart and face are focused, Paradise will be his."