Chapter on Water and Its Rules
Tahdhīb al-Aḥkām|Volume 1|Book 1|Chapter 21
عَنْهُ عَنِ اَلْعَبَّاسِ عَنْ عَبْدِ اَللَّهِ بْنِ اَلْمُغِيرَةِ عَنْ أَبِي أَيُّوبَ عَنْ مُحَمَّدِ بْنِ مُسْلِمٍ عَنْ أَبِي عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ قَالَ: قُلْتُ لَهُ اَلْغَدِيرُ فِيهِ مَاءٌ مُجْتَمِعٌ تَبُولُ فِيهِ اَلدَّوَابُّ وَ تَلَغُ فِيهِ اَلْكِلاَبُ وَ يَغْتَسِلُ فِيهِ اَلْجُنُبُ قَالَ« إِذَا كَانَ قَدْرَ كُرٍّ لَمْ يُنَجِّسْهُ شَيْءٌ وَ اَلْكُرُّ سِتُّمِائَةِ رِطْلٍ».
From him, from Al-Abbas, from Abdullah ibn Al-Mughira, from Abu Ayyub, from Muhammad ibn Muslim, narrated from Abu Abdullah عليه السلام: I said to Imam عليه السلام: "A pond that has collected water - animals urinate in it, dogs drink from it, and a person in a state of janabah (major ritual impurity) bathes in it - what is its ruling?" Imam عليه السلام said: "If it contains the amount of a kurr, then nothing renders it impure. A kurr is six hundred ritl."
- Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 1, p. 439
- Ṣaḥīḥ al-Tahdhīb, p. 19