The Sufficient (Vol 2) · Hadith 634 (#Ḥadīth #10)
Chapter 77 | Visiting Brothers (in belief)
10ـ الْحُسَيْنُ بْنُ مُحَمَّدٍ عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنْ أَحْمَدَ بْنِ إِسْحَاقَ عَنْ بَكْرِ بْنِ مُحَمَّدٍ عَنْ أَبِي عَبْدِ الله (عَلَيهِ السَّلام) قَالَ مَا زَارَ مُسْلِمٌ أَخَاهُ الْمُسْلِمَ فِي الله وَلله إِلا نَادَاهُ الله عَزَّ وَجَلَّ أَيُّهَا الزَّائِرُ طِبْتَ وَطَابَتْ لَكَ الْجَنَّةُ.
10. Al-Husayn ibn Muhammad has narrated from [Ahmad ibn Muhammad] from Ahmad ibn Ishaq from Bakr ibn Muhammad from Abu ‘Abdillah who has said the following: “Whenever a Muslim visits his Muslim brother, due to Allah’s relation, and for the sake of Allah, Allah, the Majestic, the Glorious, will say, ‘O visitor, how beautiful is your deed! How beautiful is paradise as your reward! ’”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).