The Messenger of Allah ﷺ stayed as a guest at Ubayy's home. He said, "We brought him food and a dish of dates mixed with butter and curds, and he ate from it." The hadith continues.
نزل رسول الله ﷺ على أبي، قال: فقربنا إليه طعاما ووطبة فأكل منها. الحديث.
Muslim narrated it in the Book of Drinks (2042), from Muhammad bin Muthanna Anazi, who said, Muhammad bin Jafar narrated to us, Shubah narrated to us, from Yazid bin Khumayr, from Abdullah bin Busr, who said, and he mentioned the hadith.Regarding the word "watbah," Nawawi said, this is how the majority narrated it, "watbah," with a waw, a sakin ta, followed by a single-dotted ba. This is also how Nadr bin Shumayl, who narrated this hadith from Shubah, transmitted it. Nadr was one of the leading authorities in language. Nadr explained it, saying, al-watbah is a mixture of dates, made by combining Barni dates, crushed dried curd, and clarified butter.Qadi Iyad reported from the narration of some transmitters in Muslim, "watiah," with a fathah on the waw, a kasrah on the ta, followed by a hamzah, and he claimed that this was the correct reading. Others made the same claim. Al-watiah, with the hamzah, according to the people of language, is a food made from dates, similar to al-hays. This is what they mentioned, and there is no contradiction between all of these accounts. What is to be accepted is whatever the narrations establish as sound, and it is correct linguistically as well. And Allah knows best.Sharh Muslim (12/225).