Chapter on Purifying Water From Impurities
Tahdhīb al-Aḥkām|Volume 1|Book 1|Chapter 11
وَ أَخْبَرَنِي اَلشَّيْخُ أَيَّدَهُ اَللَّهُ تَعَالَى عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنْ أَبِيهِ عَنِ اَلْحُسَيْنِ بْنِ اَلْحَسَنِ بْنِ أَبَانٍ عَنِ اَلْحُسَيْنِ بْنِ سَعِيدٍ عَنِ اَلنَّضْرِ بْنِ سُوَيْدٍ عَنْ عَبْدِ اَللَّهِ بْنِ سِنَانٍ عَنْ أَبِي عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ قَالَ:« إِنْ سَقَطَ فِي اَلْبِئْرِ دَابَّةٌ صَغِيرَةٌ أَوْ نَزَلَ فِيهَا جُنُبٌ نُزِحَ مِنْهَا سَبْعُ دِلاَءٍ فَإِنْ مَاتَ فِيهَا ثَوْرٌ أَوْ نَحْوُهُ أَوْ صُبَّ فِيهَا خَمْرٌ نُزِحَ اَلْمَاءُ كُلُّهُ».
The Shaykh (Al-Mufid), may Allah سبحانه وتعالى support him, narrated to me from Ahmad ibn Muhammad, from his father, from Al-Husayn ibn Al-Hasan ibn Aban, from Al-Husayn ibn Sa'id, from Al-Nadr ibn Suwayd, from Abdullah ibn Sinan, from Abu Abdullah عليه السلام.
Imam عليه السلام said: "If a small animal falls into the well or a person in a state of major ritual impurity (junub) descends into it, seven buckets must be drawn from it. But if a bull or something similar dies in it, or wine is poured into it, then all the water must be drawn out."
- Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 1, p. 255
- Ṣaḥīḥ al-Tahdhīb