Chapter on the Description of Ablution (Wudu)
Tahdhīb al-Aḥkām|Volume 1|Book 1|Chapter 4
وَبِهَذَا اَلْإِسْنَادِ عَنِ اَلْحُسَيْنِ بْنِ سَعِيدٍ عَنْ صَفْوَانَ عَنْ مَنْصُورِ بْنِ حَازِمٍ عَنْ أَبِي عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ: فِي اَلرَّجُلِ يَتَوَضَّأُ فَيَبْدَأُ بِالشِّمَالِ قَبْلَ اَلْيَمِينِ قَالَ« يَغْسِلُ اَلْيَمِينَ وَ يُعِيدُ اَلْيَسَارَ».
Through this chain of narration, from al-Husayn ibn Saʿid, from Ṣafwan, from Mansur ibn Hazim, from Abu Abdullah عليه السلام
Imam عليه السلام said regarding a man who performs Wuduʾ and starts with the left hand before the right: Imam عليه السلام said: "He should wash the right hand and repeat washing the left."
- Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 1, p. 101
- Ṣaḥīḥ al-Tahdhīb, p. 57