Narrated by Gaber bin Abdullah:

We were with the messenger of Allah, PBUH and he asked for a drink. One of his men said: "Oh Messenger of Allah, Can we offer you wine to drink?" He said Yes. He (Gaber) went out looking for the drink and came back with a cup of wine. The messenger (Peace Be Upon him) asked, “Have you covered it with a twig in a transverse manner” He (Gaber) said, “Yes” and he (Muhammad) drank.

Sahih Muslim - Hadith #3753