Chapter on the Description of Ablution (Wudu)
Tahdhīb al-Aḥkām|Volume 1|Book 1|Chapter 4
مَا أَخْبَرَنِي بِهِ اَلشَّيْخُ أَيَّدَهُ اَللَّهُ تَعَالَى عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنْ أَبِيهِ عَنْ سَعْدِ بْنِ عَبْدِ اَللَّهِ عَنْ مُحَمَّدِ بْنِ عِيسَى عَنْ زِيَادِ بْنِ مَرْوَانَ اَلْقَنْدِيِّ عَنْ عَبْدِ اَللَّهِ بْنِ بُكَيْرٍ عَنْ أَبِي عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ قَالَ:« مَنْ لَمْ يَسْتَيْقِنْ أَنَّ وَاحِدَةً مِنَ اَلْوُضُوءِ تُجْزِيهِ لَمْ يُؤْجَرْ عَلَى اَلثِّنْتَيْنِ».
The Shaykh (Al-Mufid), may Allah سبحانه وتعالى support him, from Ahmad ibn Muhammad, from his father, from Saʿd ibn Abdullah, from Muhammad ibn ʿIsa, from Ziyad ibn Marwan al-Qandi, from Abdullah ibn Bukayr:
Abu Abdullah عليه السلام said: "Whoever is not certain that one (washing) in ablution (Wuduʾ) suffices him will not be rewarded for performing it twice."
- Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 1, p. 84
- Ṣaḥīḥ al-Tahdhīb