Sunan an-Nasa'i 5718
سنن النسائي#5718Sahihأَخْبَرَنَا سُوَيْدٌ، قَالَ أَنْبَأَنَا عَبْدُ اللَّهِ، عَنْ جَرِيرٍ، عَنْ مُغِيرَةَ، عَنِ الشَّعْبِيِّ، قَالَ كَانَ عَلِيٌّ رضى الله عنه يَرْزُقُ النَّاسَ الطِّلاَءَ يَقَعُ فِيهِ الذُّبَابُ وَلاَ يَسْتَطِيعُ أَنْ يُخْرَجَ مِنْهُ .
It was narrated that Ash-Sha'bi said:"Ali, may Allah be pleased with him, used to give the people thickened grape juice into which flies would fall and not be able to get out again
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 Mauquf
Al-AlbaniSahih Isnaad Mauquf
Zubair Ali ZaiDaif
In-book reference: 51:180