Answered by Shaykh Abu Usamah
For several years when I was young, I was not informed of the fard of ghusl. I would be junub, and then just wash the affected body parts and pray. I want to know, do I have to make up all these prayers the last several years?
Al-Salam alaykum
Being in a state of purity is a condition for the validity of prayer. Hence it will be necessary for you to repeat all those salahs that you offered in the state of janaba (major impurity).
Abu Usamah
Faraz notes: Given that intention is not a condition for wudu or ghusl, a normal shower fulfills the conditions of ghusl, as long as one washed one’s mouth and nose, which most people do many times daily. So the number of prayers to make up would only be from the time of becoming ritually impure to the next full shower one takes…