The Prophet ﷺ ate a piece of dried curd, then performed wudu afterward and prayed.
وبهذا الإسناد أن النبي ﷺ أكل ثور أقط فتوضأ منه وصلى
Its isnad is sahih, see the previous one and its references. It is also found in Muslim, 1/272, no. 351, and Tirmidhi, 1/114, no. 79.