لان معنى هذا الخبر أن يأخذ الماء من المستنقع بيده ولا ينزله بنفسه ويغتسل بصبه على البدن فاما إذا نزله فسد حسب ما بيناه يدل على ما ذكرناه.
The meaning of this narration is that the man should take water from the pool using his hands and pour it over his body for ghusl, without immersing his whole body in the water. If he were to immerse himself, the water would become invalid, as previously explained. This interpretation is supported by the principles discussed earlier.