Musannaf Ibn Abi Shaybah

It is narrated from Ibn Aun. He says that Umar visited some people of the tribe of Thaqif at a time when their food was served. So he said: Eat tharid before eating meat, because it fills the place of deficiency. And when your nabidh becomes strong, then dilute it with water, and do not serve this nabidh to the villagers.