Sunan an-Nasa'i 5723
سنن النسائي#5723Sahihأَخْبَرَنَا أَحْمَدُ بْنُ خَالِدٍ، عَنْ مَعْنٍ، قَالَ حَدَّثَنَا مُعَاوِيَةُ بْنُ صَالِحٍ، عَنْ يَحْيَى بْنِ سَعِيدٍ، عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ، قَالَ إِذَا طُبِخَ الطِّلاَءُ عَلَى الثُّلُثِ فَلاَ بَأْسَ بِهِ .
It was narrated that Sa'eed bin Al-Musayyab said:"When At-Tila' (thickened grape juice) has been cooked and reduced to one-third, then there is nothing wrong with it
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
Abu GhuddahSahih Isnaad Maqtu
Al-AlbaniSahih Isnaad Maqtu
Zubair Ali ZaiIsnaad Sahih
In-book reference: 51:185