The Book of the Believer · Hadith 78 (#Ḥadīth #28)
Chapter 2 | The Exclusive Honors that Allah has Reserved for the Believers
78 - وعن أبي جعفر عليه السلام قال: إن المؤمنين إذا التقيا فتصافحا أدخل الله يده فصافح أشدهما حبا لصاحبه.
78. It has been reported that Abu Ja'far said: When two believers meet and shake hands, Allah puts His Hand in between and it is shaken by the one who loves the other the most.
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).