4. My father narrated to me from Sa’d ibn ‘Abdillāh, from Aḥmad ibn Muḥammad ibn ‘Isā, from ‘Ali ibn Ismā’īl, from Safwān ibn Yaḥyā, from Isḥāq ibn ‘Ammār, who said: I asked Abal Ḥasan (Imam Kāżim عليه السلام) if a Muqassir can establish voluntary prayers next to the grave of Ḥusain عليه السلام, at (different holy) sites of the Prophet صلى الله عليه وعلى آله وسلم, and in the two Ḥarams. Imam عليه السلام replied, “Yes. Establish as many voluntary prayers as you can for it is a blessing.”