رِيَاضُ الصَّالِحِينَ
Riyad as-Salihin 752
The Book About the Etiquette of Eating
Excellence of Eating with Three Fingers and Licking Them
وَعَنْ أَنَسٍ رضى اللَّهُ عَنْهُ قَالَ: كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِذَا أَكَلَ طَعَامًا، لَعِقَ أَصَابِعَهُ الثَّلاَثَ، وَقَالَ:"إِذَا سَقَطَتْ لُقْمَةُ أَحَدِكُمْ فليأخذها، وليمط عَنْهَا الأَذَى، وَلْيَأْكُلْهَا،وَلاَ يَدَعْهَا لِلشَّيْطَانِ" وَأَمَرَنَا أَنْ نَسْلُتَ الْقَصْعَةَ وَقَالَ: "إِنَّكُمْ لاَ تَدْرُونَ فِي أي طَعَامِكُمُ الْبَرَكَةُ" .((رَوَاهُ مُسْلِم))
Anas (May Allah be pleased with him) reported: Whenever the Messenger of Allah (ﷺ) ate food, he would lick his three fingers and say, "If anyone of you drops a morsel of food, he should remove any dirt that may have stuck on it and then eat it, and should not leave it for Satan." He (ﷺ) also commanded us that we should glean the pot, saying, "You do not know in which part of your food the blessings lies." [Muslim].
Riyad as-Salihin, 752