The Sufficient (Vol 2) · Hadith 642 (#Ḥadīth #2)
Chapter 78 | Greeting with Handshake
2ـ عَنْهُ عَنِ ابْنِ فَضَّالٍ عَنْ عَلِيِّ بْنِ عُقْبَةَ عَنْ أَبِي خَالِدٍ الْقَمَّاطِ عَنْ أَبِي جَعْفَرٍ (عَلَيهِ السَّلام) قَالَ إِنَّ الْمُؤْمِنَيْنِ إِذَا الْتَقَيَا وَتَصَافَحَا أَدْخَلَ الله يَدَهُ بَيْنَ أَيْدِيهِمَا فَصَافَحَ أَشَدَّهُمَا حُبّاً لِصَاحِبِهِ.
2. It is narrated from him (narrator of the Hadith above) from ibn Faddal from Ali ibn ‘Uqbah from Abu Khalid al-Qammat from Abu Ja’far who has said the following: "When the believing people meet and shake hands Allah inserts His hand between their hands and shakes hands with the one whose love for his brother (in belief) is more intense.’”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).