The Complete Pilgrimage Guide · Hadith 499 (#Ḥadīth #4)
Chapter 72 | The Reward for the Ziyārah of Ĥusain on the Fifteenth of Sha’bān
4 وَ رَوَاهُ صَافِي الْبَرْقِيُّ عَنْ أَبِي عَبْدِ اللَّهِ (ع) قَالَ مَنْ زَارَ أَبَا عَبْدِ اللَّهِ (ع) ثَلَاثَ سِنِينَ مُتَوَالِيَاتٍ لَا فَصْلَ فِيهَا فِي النِّصْفِ مِنْ شَعْبَانَ غُفِرَ لَهُ ذُنُوبُهُ
4. Sāfi Al-Barqi narrated that: Abū ‘Abdillāh (Imam Sādiq ﷺ) said: The sins of those who go to the Ziyārah of Abī ‘Abdillāh (Imam Ḥusain ) on the fifteenth of Sha’bān for three consecutive years without a break will be forgiven.
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).