The Limits of Ablution, Its Order and Reward
Man Lā Yaḥḍuruh al-Faqīh|Volume 1|Book 1|Chapter 11
وَقَالَ اَلْعَالِمُ عَلَيْهِ اَلسَّلاَمُ: «ثَلاَثَةٌ لاَ أَتَّقِي فِيهَا أَحَداً شُرْبُ اَلْمُسْكِرِ وَ اَلْمَسْحُ عَلَى اَلْخُفَّيْنِ وَ مُتْعَةُ اَلْحَجِّ.
The scholar, Imam Jafar ibn Muhammad Al-Sadiq عليه السلام, said: "There are three things in which I do not fear anyone (taqiyya): drinking intoxicants, wiping over the leather socks (khuffs), and the Hajj Tamattu'"
- Ṣaḥīḥ al-Faqīh