The Ĥā`ir and Its Sanctity
Kāmil al-Ziyārāt|Volume 1|Book 2|Chapter 89
3 حَدَّثَنِي حَكِيمُ بْنُ دَاوُدَ بْنِ حَكِيمٍ (رحمه الله) عَنْ سَلَمَةَ بْنِ الْخَطَّابِ عَنْ مَنْصُورِ بْنِ الْعَبَّاسِ يَرْفَعُهُ إِلَى أَبِي عَبْدِ اللَّهِ (ع) قَالَ حَرَمُ قَبْرِ الْحُسَيْنِ (ع) خَمْسُ فَرَاسِخَ مِنْ أَرْبَعَةِ جَوَانِبِ الْقَبْرِ
3. Ḥukaym ibn Dāwūd ibn Ḥukaym narrated to me from Salamah ibn Khaťťāb, from Mansūr ibn ‘Abbās, who narrated that: Abū ‘Abdillāh (Imam Sādiq عليه السلام) said: The sacred boundary of the grave of Ḥusain عليه السلام is five parasangs from each of the four sides of the grave.