Hadith 15:63
Abu Bakr narrated to us, he said: Ali ibn Mushir narrated to us, from al-Shaybani, from Abd al-Malik ibn Nafi, who said: I asked Ibn Umar about *al-tila* (a type of thickened grape juice/syrup) that is cooked. He said: "There is no harm in it." I said: "It is in a *muzaffat* (a vessel coated with pitch/tar)." He said: "Do not drink it from a *muzaffat*."
حدثنا أبو بكر قال حدثنا علي بن مسهر عن الشيباني عن عبد الملك بن نافع قال سألت بن عمر عن الطلاء يطبخ فقال لا بأس قلت إنه في مزفت قال لا تشربه في مزفت