The Complete Pilgrimage Guide · Hadith 498 (#Ḥadīth #3)

3 حَدَّثَنِي أَبِي (رحمه الله) وَ جَمَاعَةُ مَشَايِخِي عَنْ مُحَمَّدِ بْنِ يَحْيَى الْعَطَّارِ عَنْ مُحَمَّدِ بْنِ الْحُسَيْنِ عَنْ إِبْرَاهِيمَ بْنِ هَاشِمٍ عَنْ صَنْدَلٍ عَنْ هَارُونَ بْنِ خَارِجَةَ عَنْ أَبِي عَبْدِ اللَّهِ (ع) قَالَ إِذَا كَانَ النِّصْفُ مِنْ شَعْبَانَ نَادَى مُنَادٍ مِنَ الْأُفُقِ الْأَعْلَى زَائِرِي الْحُسَيْنِ (ع) ارْجِعُوا مَغْفُوراً لَكُمْ ثَوَابُكُمْ عَلَى رَبِّكُمْ وَ مُحَمَّدٍ نَبِيِّكُمْ

3. My father and all of my scholars narrated to me from Muḥammad ibn Yaḥyā Al-‘Aťťār, from Muḥammad ibn Ḥusain, from Ibrāhīm ibn Hāshim, from Sandal, from Hārūn ibn Khārijah, who said: Abū ‘Abdillāh (Imam Sādiq ) said: On the fifteenth of Sha’bān, a caller calls out from the highest horizon: O those who have come to the Ziyārah of Ḥusain ! Return forgiven and your rewards will be given (to you) by your Lord and by Muḥammad ﷺ, your Prophet.

Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).