Al-Kāfi - The Book of Drinks

Chapter: Al-Tila’ (The One-Third Juice (grape juice) that has Remained after the Evaporation of the other Two-Thirds) َّدُ بْنُ يَحْيَى عَنْ ٠َّدِ بْنِ الْحُسَيْنِ عَنْ ٠َّدِ بْنِ عَبْدِ اللَّهِ عَنْ عُقْبَةَ بْنِ خَالِدٍ عَنْ أَبِي عَبْدِ اللَّهِ ( عليه السلا٠) قَالَ فِي رَجُلٍ أَخَذَ عَشَرَةَ أَرْطَالٍ ٠ِنْ عَصِيرِ الْعِنَبِ فَصَبَّ عَلَيْهِ عِشْرِينَ رِطْلًا ٠َاءً وَ طَبَخَهَا حَتَّى ذَهَبَ ٠ِنْهُ عِشْرُونَ رِطْلًا وَ بَقِيَ عَشَرَةُ أَرْطَالٍ أَ يَصْلُحُ شُرْبُ ذَلِكَ أَ٠َا طُبِخَ عَلَى ثُلُثِهِ فَهُوَ حَلَالٌ.

He (the Imam) said, ‘What is cooked until only one-third remains it is lawful.’” جهول - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (22/285))