Musannaf Ibn Abi Shaybah 25802 — Covering drink and tying

It is narrated from Umm Sa'id that she said: I brought sahur to Sayyiduna Ali (may Allah be pleased with him) and placed it before him, and he was praying at the time. When he had finished the prayer, he said: Why did you not cover it? Did you see the devil when he put his mouth in it? Pour it out. And he refused to drink it.