Ghusl for Janabah by Immersion, Followed by Wudu

Question:
He says: Honorable Shaykh, may Allah grant you success. He says: I have been performing ghusl for janabah for more than fifteen years by immersing my entire body in water without performing wudu before or during the ghusl; I only perform wudu after finishing it. Is my ghusl sufficient?

Answer:
If you cover your entire body with water and immerse yourself in it, there is no harm. However, as mentioned to you previously, one should not immerse oneself in stagnant water that does not flow for the purpose of removing janabah. But if the water flows, one may immerse oneself in it, and then it flows away and is replaced by fresh water, there is no harm. For example, in a pool, one fills the pool, immerses oneself in it, then opens the drain so the water goes out and fresh water comes in; there is no harm in this. Then one performs wudu, and there is no harm, or one performs wudu first and then immerses oneself. Yes.