The Prophet ﷺ said, 'When you eat, do not wipe your hands till you have licked it, or had it licked by somebody else." (Using translation from Bukhārī 5456)  

أَنَّ النَّبِيَّ ﷺ قَالَ «إِذَا أَكَلَ أَحَدُكُمْ فَلَا يَمْسَحْ يَدَهُ حَتَّى يَلْعَقَ أَصَابِعَهُ أَوْ يُلْعِقَهَا »