The martyrdom of Imam Reza (as) according to the narration

Imam Reza (pbuh)

منْ زَارَنِي عَلَى بُعْدِ دَارِي أَتَيْتُهُ يَوْمَ اَلْقِيَامَةِ فِي ثَلاَثَةِ مَوَاطِنَ حَتَّى أُخَلِّصَهُ مِنْ أَهْوَالِهَا إِذَا تَطَايَرَتِ اَلْكُتُبُ يَمِيناً وَ شِمَالاً وَ عِنْدَ اَلصِّرَاطِ وَ عِنْدَ اَلْمِيزَانِ

Whoever visits me despite the far distance to my tomb, I will come to save him on the Resurrection Day on three occasions until I liberate him from his terrors: 1- When the Letters of Deeds are handed to his right and to his left hands, 2- At the moment of crossing the Bridge over Hell, and 3- At the time when the Scale of Deeds (measuring the amount of good vs. bad deeds) is set up

Uyun Akhbar al-Rida (AS), v. 2, p. 255