On the day of Siffin, Ammar said, "Bring me a drink of milk, for the Messenger of Allah ﷺ said, 'The last drink you will have from this world will be a drink of milk.'" So a drink of milk was brought to him, and he drank it. Then he advanced and was killed.
حدثنا وكيع حدثنا سفيان عن حبيب بن أبي ثابت
قال عمار يوم صفين ائتوني بشربة لبن فإن رسول الله ﷺ قال آخر شربة تشربها من الدنيا شربة لبن فأتي بشربة لبن فشربها ثم تقدم فقتل
No references are available.
Its isnad is sahih, its narrators are trustworthy and well-known. The hadith was narrated by Ibn Abu Shayba, 5/302, and it will also come again later.