[Machine] My grandfather, Umayyah ibn Makhshiyy, was one of the companions of the Prophet Muhammad ﷺ . I heard him saying that there was a man who would eat while the Prophet ﷺ was watching, but the man did not mention the name of Allah until he reached the end of his meal. Then he said "Bismillah" (In the name of Allah) at the beginning and end of his meal. The Prophet ﷺ said, "The devil has been eating with him until he mentioned Allah, and whatever is left in his stomach will be vomited."
أَنَّ جَدِّي أُمَيَّةَ بْنَ مَخْشِيٍّ وَكَانَ مِنْ أَصْحَابِ النَّبِيِّ ﷺ سَمِعْتُهُ يَقُولُ إِنَّ رَجُلًا كَانَ يَأْكُلُ وَالنَّبِيُّ ﷺ يَنْظُرُ فَلَمْ يُسَمِّ اللَّهَ حَتَّى كَانَ فِي آخِرِ طَعَامِهِ فَقَالَ بِسْمِ اللَّهِ أَوَّلِهِ وَآخِرِهِ فَقَالَ النَّبِيُّ ﷺ «مَا زَالَ الشَّيْطَانُ يَأْكُلُ مَعَهُ حَتَّى سَمَّى فَمَا بَقِيَ فِي بَطْنِهِ شَيْءٌ إِلَّا قَاءَهُ»