Thumamah bin Hazn says that once I asked Hazrat Aisha (may Allah be pleased with her) about nabidh, so she called an Abyssinian slave-girl and said, "Ask her, she used to prepare nabidh for the Prophet (peace and blessings be upon him)." She said, "I used to prepare nabidh for the Prophet (peace and blessings be upon him) at night in a waterskin, tie its mouth, and hang it up. When morning came, the Prophet (peace and blessings be upon him) would drink from it."