Hadith 15:251
Abu Bakr narrated to us, he said: Abd al-Rahim ibn Sulayman narrated to us, from Dawud ibn Abi Hind, who said: I asked Sa'id ibn al-Musayyib about the drink that Umar ibn al-Khattab had permitted for the people. He said: It is the *tila'* (thickened grape juice) which has been cooked until two-thirds of it has gone and one-third of it remains.
حدثنا أبو بكر قال حدثنا عبد الرحيم بن سليمان عن داود بن أبي هند قال سألت سعيد بن المسيب عن الشراب الذي كان عمر بن الخطاب أجازه للناس قال هو الطلاء الذي قد طبخ حتى ذهب ثلثاه وبقي ثلثه