Anas reported that his mother Umm Sulaym took a mudd of barley, ground it, and made from it a porridge called khatifah. She then squeezed out a small leather container of clarified butter she had, and sent me to the Prophet ﷺ. I came to him while he was sitting with his companions, and the rest of the hadith follows.In another wording, "Then she went to a small leather container in which there was some clarified butter."
أن أم سليم أمه عمدت إلى مد من شعير جشته، وجعلت منه خطيفة، وعصرت عكة عندها، ثم بعثني إلى النبي ﷺ فأتيته- وهو في أصحابه- الحديث. و في لفظ: ثم عمدت إلى مكة كان فيها شيء من سمن.
Bukhari related it in the chapters on foods (5450), from Salit bin Muhammad, who said, Hammad bin Zayd narrated to us, from Jaad Abu Uthman, from Anas. Muslim related it in the chapters on drinks (2040) through other routes, from Anas. The other wording is found in Imam Ahmad (12491), through the route of Hammad bin Zayd, from Hisham (that is, Ibn Hassan Qurdusi), from Muhammad (that is, Ibn Sirin), from Anas, who mentioned it.His saying "khatifah" has the same pattern as "aseedah," and its meaning, it has been said, is that its origin is that milk is taken and flour is sprinkled over it, then it is cooked, and people scoop it up, snatching it with their fingers and spoons. It was named accordingly, being in the form "faeelah" with the meaning of "mafulah" (that which is snatched up). Fath al-Bari (9/574).