Does a person have to do istinjaa’
(wash the private parts with water) every time he wants to do wudoo’?
Praise be to Allaah.
Istinjaa’ is not necessary each time a person wants to do
wudoo’. It is essential after passing urine or stools, when a person must wash his
private parts before doing wudoo’ for prayer.
Fataawa al-Lajnah al-Daa’imah, 5/102