Question:
What is the ruling regarding māʾ mustaʿmal (used water)?
Source: Fatāwā Amunpuri by Shaykh Ghulam Mustafa Zaheer Amunpuri
Answer:
Māʾ mustaʿmal (used water) is pure, and it can be used to remove physical impurity (najāsah ḥaqīqiyyah).
Scholarly Consensus:
❀ ʿAllāmah ʿAynī al-Ḥanafī رحمه الله (855 AH):
أما الماء المستعمل، فيجوز به إزالة النجاسة الحقيقية بالإتفاق
“As for used water, it is permissible—by consensus—to remove physical impurity with it.”
(Minḥat al-Sulūk, p. 80)

- Māʾ mustaʿmal is ṭāhir (pure).
- It may be used to wash away physical impurities.
- Scholars are in agreement on this matter.