Sunan an-Nasa'i, Volume 6, Book 51, Hadith 5748 (DarusSalam) ⓘ
It was narrated that Sa'eed bin Al-Musayyab said concerning Nabidh: "The dregs are what intoxicates."
أَخْبَرَنَا سُوَيْدٌ، قَالَ أَنْبَأَنَا عَبْدُ اللَّهِ، عَنْ سُفْيَانَ، عَنْ دَاوُدَ بْنِ أَبِي هِنْدٍ، عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ، أَنَّهُ قَالَ فِي النَّبِيذِ خَمْرُهُ دُرْدِيُّهُ .
also referenced under: Hadith 5745 (Reference) & Book 51, Hadith 207 (In-Book)