1. If someone did ghusl a different way because of an injury, does he have to repeat the ghusl when the injury heals?
2. If someone is doing tayammum to remove janaba, do they have to repeat the ghusl?
3. Say someone had surgery and they have stitches and scars, and the doctor said they are allowed to get the area wet. Can they perform ghusl normally, and do they have to repeat the ghusl when the scars heal, and stitches are less visible?
Answer: In the name of Allah, Most Compassionate, Most Merciful,
Jazakum Allah khayr for your question!
1. You don’t have to repeat a ghusl performed in the past while being injured after the healing of injury because when a duty has been performed, it has been performed for good and doesn’t come back. [Tahtawi; Gloss on Maraqi al-Falah]
2. Yes, when able to use water, one has to perform a valid ghusl. This is because finding sufficient water is listed as being from the nullifier of Tayammum. [Nur al-idah]
3. No, you don’t have to repeat the ghusl performed while having stitches and scars when you heal for a reason mentioned in the first answer above.
And Allah knows best.
May Allah Most High grant you the best of this world and the next. Please keep us in your du’as!
[Ustadh] Sufyan Qufi