Chapter on Tayammum (dry ablution) and Its Rules
Tahdhīb al-Aḥkām|Volume 1|Book 1|Chapter 20
عَنْهُ عَنْ أَحْمَدَ بْنِ اَلْحَسَنِ عَنْ عَمْرِو بْنِ سَعِيدٍ عَنْ مُصَدِّقِ بْنِ صَدَقَةَ عَنْ عَمَّارٍ عَنْ أَبِي عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ: فِي رَجُلٍ مَعَهُ إِنَاءَانِ فِيهِمَا مَاءٌ فَوَقَعَ فِي أَحَدِهِمَا قَذَرٌ وَلاَ يَدْرِي أَيُّهُمَا هُوَ وَلَيْسَ يَقْدِرُ عَلَى مَاءٍ غَيْرِهِ قَالَ« يُهَرِيقُهُمَا جَمِيعاً وَ يَتَيَمَّمُ».
From him, from Ahmad ibn Al-Hasan, from Amr ibn Sa’id, from Musaddiq ibn Sadaqah, from Ammar, narrated from Abu Abdullah عليه السلام:
Imam عليه السلام was asked regarding a man who has two containers of water, and impurity falls into one of them, but he does not know which one it is, and he cannot find any other water. Imam عليه السلام said: "He should pour them both out and perform tayammum (dry ablution)."
- Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 1, p. 431
- Ṣaḥīḥ al-Tahdhīb