٤ حَدَّثَنِي أَبِي (رحمه الله) عَنْ سَعْدِ بْنِ عَبْدِ اللَّهِ عَنْ أَحْمَدَ بْنِ مُحَمَّدِ بْنِ عِيسَى عَنْ عَلِيِّ بْنِ إِسْمَاعِيلَ عَنْ صَفْوَانَ بْنِ يَحْيَى عَنْ إِسْحَاقَ بْنِ عَمَّارٍ عَنْ أَبِي الْحَسَنِ (ع) قَالَ سَأَلْتُهُ عَنِ التَّطَوُّعِ عِنْدَ قَبْرِ الْحُسَيْنِ (ع) وَ مَشَاهِدِ النَّبِيِّ (ص) وَ الْحَرَمَيْنِ وَ التَّطَوُّعِ فِيهِنَّ بِالصَّلَاةِ وَ نَحْنُ مُقَصِّرُونَ قَالَ نَعَمْ تَطَوَّعْ مَا قَدَرْتَ عَلَيْهِ هُوَ خَيْرٌ
4. My father narrated to me from Sa’d ibn ‘Abdillāh, from Aĥmad ibn Muĥammad ibn ‘Isā, from ‘Ali ibn Ismā’ǐl, from Šafwān ibn Yaĥyā, from Isĥāq ibn ‘Ammār, who said: I asked Abal Ĥasan (Imam Kāżim ) if a Muqaššir can establish voluntary prayers next to the grave of Ĥusain , at (different holy) sites of the Prophet ﷺ, and in the two Ĥarams. Imam  replied, “Yes. Establish as many voluntary prayers as you can for it is a blessing.”