(18) باب اسْتِحْبَابِ لَعْقِ الأَصَابِعِ وَالْقَصْعَةِ وَأَكْلِ اللُّقْمَةِ السَّاقِطَةِ بَعْدَ مَسْحِ مَا يُصِيبُهَا مِنْ أَذًى وَكَرَاهَةِ مَسْحِ الْيَدِ قَبْلَ لَعْقِهَا
Abu Huraira reported Allah's Messenger (ﷺ) as saying:
When any one of you eats food he should lick his fingers, for he does not know in what part of the food sticking to his fingers the blessing lies. (ES)
Reference (ES): Sahih Muslim 2035 a (ES)
In-book reference (ES): Book 36, Hadith 181 (ES)
USC-MSA web (English) reference(deprecated numbering scheme): Book 23, Hadith 5050 (ES)