That Messenger of Allah (ﷺ) said: "When one of you eats, then let him lick his fingers, for indeed he does not know in which of them is the blessing." He said: There are narrations on this topic from Jabir, Ka'b bin Malik, and Anas. [Abu 'Eisa said:] This Hadith is Hasan Gharib, we do not know of it except from this route, as a narration of Suhail. I asked Muhammad about this Hadith, so he said: "This is among the diverse narrations of 'Abdul-'Aziz, we do not know of it except from his narration."
حَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ الْمَلِكِ بْنِ أَبِي الشَّوَارِبِ، حَدَّثَنَا عَبْدُ الْعَزِيزِ بْنُ الْمُخْتَارِ، عَنْ سُهَيْلِ بْنِ أَبِي صَالِحٍ، عَنْ أَبِيهِ، عَنْ أَبِي هُرَيْرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم إِذَا أَكَلَ أَحَدُكُمْ فَلْيَلْعَقْ أَصَابِعَهُ فَإِنَّهُ لاَ يَدْرِي فِي أَيَّتِهِنَّ الْبَرَكَةُ . قَالَ وَفِي الْبَابِ عَنْ جَابِرٍ . وَكَعْبِ بْنِ مَالِكٍ وَأَنَسٍ . قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ غَرِيبٌ لاَ نَعْرِفُهُ إِلاَّ مِنْ هَذَا الْوَجْهِ مِنْ حَدِيثِ سُهَيْلٍ . وَسَأَلْتُ مُحَمَّدًا عَنْ هَذَا الْحَدِيثِ فَقَالَ هَذَا حَدِيثُ عَبْدِ الْعَزِيزِ مِنَ الْمُخْتَلِفِ لاَ يُعْرَفُ إِلاَّ مِنْ حَدِيثِهِ .
Tirmizi
The Book on Food • Hadith 1861