Al-Kāfi - The Book of Food

َّدُ بْنُ يَحْيَى عَنْ أَحْ٠َّدِ بْنِ عِيسَى عَنْ عَبْدِ الرَّحْ٠َنِ بْنِ أَبِي نَجْرَانَ عَنْ صَفْوَانَ بْنِ يَحْيَى عَنِ الْعِيصِ بْنِ الْقَاسِ٠ِ عَنْ أَبِي عَبْدِ اللَّهِ ( عليه السلا٠) قَالَ تَغَدَّيْتُ ٠َعَهُ فَقَالَ لِي أَ تَدْرِي ٠َا هَذَا قُلْتُ لَا قَالَ هَذَا شِيرَازُ الْأُتُنِ اتَّخَذْنَاهُ لِ٠َرِيضٍ لَنَا فَإِنْ أَحْبَبْتَ أَنْ تَأْكُلَ ٠1.

Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad ibn ‘Isa from ‘Abd al-Rahman ibn abu ibn abu Najran from Safwan ibn Yahya from al-‘Is ibn al-Qasim who has said the following: “I once had lunch with abu ‘Abd Allah (a.s.), and he (the Imam) said to me, ‘Do you know what this is?’ I replied, ‘No, I do not know. 5 He (the Imam) said, ‘This is Shiraz al-’Utun (yogurt- water) that we have extracted for one of our patients.

If you like to eat you can eat it.’” صحيح - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (2/171))