[Machine] The Messenger of Allah ﷺ said: "If a morsel of food falls from one of you, let him remove any harm that may have touched it, and then eat it. Do not leave it for the devil, and do not wipe your hand on a cloth until you lick it or let a dog lick it, because he does not know in which of his meals the blessing lies."  

قَالَ رَسُولُ اللهِ ﷺ إِذَا سَقَطَتْ لُقْمَةٌ مِنْ أَحَدِكُمْ فَلْيُمِطْ مَا أَصَابَهَا مِنَ الْأَذَى وَلْيَأْكُلْهَا وَلَا يَدَعْهَا لِلشَّيْطَانِ وَلَا يَمْسَحْ أَحَدُكُمْ يَدَهُ بِالْمِنْدِيلِ حَتَّى يَلْعَقَهَا أَوْ يُلْعِقَهَا فَإِنَّهُ لَا يَدْرِي فِي أِيِّ طَعَامِهِ الْبَرَكَةُ  

If the morsel of one of you falls down, he should wipe away anything injurious on it and eat it and not leave it for the devil. And he ordered us to clean the dish, for one of you does not leave it for the devil. And he ordered us to clean the dish, for one of you does not know in what part of his food the blessing lies. (Using translation from Abū Dāʾūd 3845)   

أَنَّ رَسُولَ اللهِ ﷺ كَانَ إِذَا أَكَلَ طَعَامًا لَعِقَ أَصَابِعَهُ الثَّلَاثَ وَقَالَ إِذَا سَقَطَتْ لُقْمَةُ أَحَدِكُمْ فَلْيُمِطْ عَنْهَا الْأَذَى وَلْيَأْكُلْهَا وَلَا يَدَعْهَا لِلشَّيْطَانِ وَأَمَرَنَا أَنْ نَسْلُتَ الصَّحْفَةَ وَقَالَ إِنَّ أَحَدَكُمْ لَا يَدْرِي فِي أِيِّ طَعَامِهِ يُبَارَكُ لَهُ