The Prophet ﷺ was brought a piece of cheese in Tabuk. He called for a knife, mentioned Allah's name and cut it.  

أُتِيَ النَّبِيُّ ﷺ بِجُبْنَةٍ فِي تَبُوكَ فَدَعَا بِسِكِّينٍ فَسَمَّى وَقَطَعَ