Musannaf Ibn Abi Shayba 16:383

Abu Bakr narrated to us, he said: Yazid ibn Harun narrated to us, he said: Hajjaj ibn Abi Zaynab narrated to us, he said: Abu Sufyan Talha ibn Nafi' narrated to us, from Jabir, that the Prophet, may Allah bless him and grant him peace, said: "Vinegar is an excellent condiment."