The word وضو mentioned in Quran. Quranic Verses about Ablution.
The topic وضو mentioned 02 times in Quran in 02 verses.
You who believe! Do not approach the prayer when you are drunk, so that you will know what you are saying, nor in a state of major impurity–unless you are travelling–until you have washed yourselves completely. If you are ill or on a journey, or any of you have come from the lavatory or touched women, and you cannot find any water, then take for yourselves clean earth, wiping your faces and your hands. Allah is Ever-Pardoning, Ever-Forgiving. (4:43)
You who believe! When you get up to perform prayer, wash your faces and your hands and your arms to the elbows, and wipe over your heads, and (wash) your feet to the ankles. If you are in a state of major impurity, then purify yourselves. But if you are ill or on a journey, or have come from the lavatory, or have touched women, and cannot find any water, then take for yourselves clean earth, and wipe your faces and your hands therewith. Allah does not want to make things difficult for you, but He does want to purify you and to perfect His blessing upon you so that hopefully you will be thankful. (5:6)