The Messenger of Allah ﷺ said, "When you perform ablution, blow water out of your nose, and when you clean yourself with stones, use an odd number."
حدثنا جرير بن عبد الحميد عن سفيان عن هلال
قال رسول الله ﷺ إذا توضأت فانتثر وإذا استجمرت فأوتر
Its chain is sahih, like the one before it.