Ibn Ka'b b. Malik reported on the authority of his father that he saw Messenger of Allah ﷺ licking his three fingers (after having finished the food). Ibn Hatim made no mention of" three". This hadith is also narrated through another chain of transmitters.
رَأَيْتُ النَّبِيَّ ﷺ يَلْعَقُ أَصَابِعَهُ الثَّلاَثَ مِنَ الطَّعَامِ وَلَمْ يَذْكُرِ ابْنُ حَاتِمٍ الثَّلاَثَ وَقَالَ ابْنُ أَبِي شَيْبَةَ فِي رِوَايَتِهِ عَنْ عَبْدِ الرَّحْمَنِ بْنِ كَعْبٍ عَنْ أَبِيهِ