مِشْكَاةُ الْمَصَابِيحِ
Mishkat al-Masabih 4166
Foods
Section 1
وَعَنِ ابْنِ عَبَّاسٍ أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: «إِذَا أَكَلَ أَحَدُكُمْ فَلَا يمسحْ يدَه حَتَّى يلعقها أَو يلعقها»
Ibn ‘Abbas reported the Prophet (ﷺ) as saying, “When one of you eats he must not wipe his hand till he licks it, or gives it to someone to lick.” (Bukhari and Muslim.)
Mishkat al-Masabih, 4166مُتَّفَقٌ عَلَيْهِ (الألباني)