The Prophet ﷺ stayed as a guest at his home. He mentioned the hadith, saying that he used to prepare food for the Prophet ﷺ, and when it was brought back to him, he would ask where the Prophet's fingers had touched the food and would follow the traces of his fingers.
أن النبي ﷺ نزل عليه، فذكر الحديث، فكان يصنع للنبي ﷺ الطعاما، فإذا جيء به إليه سأل عن موضع أصابعه، فيتتبع موضع أصابعه.