Abu Huraira reported Messenger of Allah ﷺ as saying: When any one of you cats food he should lick his fingers, for hen does not know in what part of the food sticking to his fingers the blessing lies. This hadith has been reported on the authority of Hammad with the same chain of transmitters, but with a slight variation of wording.

وَحَدَّثَنِي مُحَمَّدُ بْنُ حَاتِمٍ، حَدَّثَنَا بَهْزٌ، حَدَّثَنَا وُهَيْبٌ، حَدَّثَنَا سُهَيْلٌ، عَنْ أَبِيهِ، عَنْ
أَبِي هُرَيْرَةَ، عَنِ النَّبِيِّ ﷺ قَالَ
" إِذَا أَكَلَ أَحَدُكُمْ فَلْيَلْعَقْ أَصَابِعَهُ فَإِنَّهُ
لاَ يَدْرِي فِي أَيَّتِهِنَّ الْبَرَكَةُ " .