١٠ حَدَّثَنِي أَبِي (رحمه الله) عَنْ سَعْدٍ عَنْ عَلِيِّ بْنِ إِسْمَاعِيلَ بْنِ عِيسَى عَنْ صَفْوَانَ بْنِ يَحْيَى عَنِ الْعِيصِ بْنِ الْقَاسِمِ قَالَ سَأَلْتُ أَبَا عَبْدِ اللَّهِ (ع) هَلْ لِزِيَارَةِ الْقَبْرِ صَلَاةٌ مَفْرُوضَةٌ قَالَ لَيْسَ لَهُ صَلَاةٌ مَفْرُوضَةٌ [شَيْءٌ مَفْرُوضٌ] قَالَ وَ سَأَلْتُهُ فِي كَمْ يَوْمٍ يُزَارُ قَالَ مَا شِئْتَ
10. My father narrated to me from Sa’d, from ‘Ali ibn Ismā’ǐl ibn ‘Isā, from Šafwān ibn Yaĥyā, from ‘Ǐš ibn Qāsim, who said: I asked Abā ‘Abdillāh (Imam Šādiq ), “Is there an obligatory prayer which should be established after the Ziyārah of the Grave (of Ĥusain )?” Imam  replied, “There are no obligatory prayers for Ziyārah.” I asked, “How frequently should I go to his Ziyārah?” Imam  replied, “As frequently as you wish.”