Hadith 14:78
Anas told that the Prophet was asked about wine which was turned into vinegar* and forbade it. Muslim transmitted it. * This is said to have been done by putting onions or salt in it, or by placing it in the sun.
وَعَنْ أَنَسٍ أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ سُئِلَ عَنِ الْخَمْرِ يُتَّخَذُ خَلًّا؟ فَقَالَ: «لَا» . رَوَاهُ مُسلم
Original Reference: Mishkat al-Masabih 3641