عَنْهُ عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنْ عَبْدِ الْعَزِيزِ بْنِ الْمُهْتَدِي عَنْ يُونُسَ بْنِ عَبْدِ الرَّحْمَنِ عَنْ دَاوُدَ بْنِ زُرْبِيٍّ قَالَ مَرِضْتُ بِالْمَدِينَةِ مَرَضاً شَدِيداً فَبَلَغَ ذَلِكَ أَبَا عَبْدِ اللَّهِ (عليه السلام) فَكَتَبَ إِلَيَّ قَدْ بَلَغَنِي عِلَّتُكَ فَاشْتَرِ صَاعاً مِنْ بُرٍّ ثُمَّ اسْتَلْقِ عَلَى قَفَاكَ وَ انْثُرْهُ عَلَى صَدْرِكَ كَيْفَمَا انْتَثَرَ وَ قُلِ اللَّهُمَّ إِنِّي أَسْأَلُكَ بِاسْمِكَ الَّذِي إِذَا سَأَلَكَ بِهِ الْمُضْطَرُّ كَشَفْتَ مَا بِهِ مِنْ ضُرٍّ وَ مَكَّنْتَ لَهُ فِي الْأَرْضِ وَ جَعَلْتَهُ خَلِيفَتَكَ عَلَى خَلْقِكَ أَنْ تُصَلِّيَ عَلَى مُحَمَّدٍ وَ عَلَى أَهْلِ بَيْتِهِ وَ أَنْ تُعَافِيَنِي مِنْ عِلَّتِي ثُمَّ اسْتَوِ جَالِساً وَ اجْمَعِ الْبُرَّ مِنْ حَوْلِكَ وَ قُلْ مِثْلَ ذَلِكَ وَ اقْسِمْهُ مُدّاً مُدّاً لِكُلِّ مِسْكِينٍ وَ قُلْ مِثْلَ ذَلِكَ قَالَ دَاوُدُ فَفَعَلْتُ مِثْلَ ذَلِكَ فَكَأَنَّمَا نُشِطْتُ مِنْ عِقَالٍ وَ قَدْ فَعَلَهُ غَيْرُ وَاحِدٍ فَانْتَفَعَ بِهِ.
54. From him, from Ahmad Bin Muhammad, from Abdul Aziz Bin Al-Muhtady, from Yunus Bin Abdul Rahmaan, from Dawood Bin Zurby who said: ‘I fell ill in Al-Medina with intense illness, and that (news) reached Abu Abdullah . So he  wrote to me: ‘It has reached me  (news of) your illness. Buy one Sa’a of wheat, then lie down on your back and scatter it upon your chest a scattering and say, ‘Our Allah (azwj)! I hereby ask You (azwj) by Your (azwj) Name which the restless (Al-Muztar i.e. Al-Qaim ) asks You (azwj) to Remove the adversities, and Enable him  in the earth and Make him  as Your (azwj) Caliph upon Your (azwj) creatures, and send greetings upon Muhammad ﷺ and upon the People  of his ﷺ Household, and Cure me from my illness’. Then sit straight and gather the wheat which is around you and say the like of that (again) and distribute one Mudd by one Mudd to each of the poor and say the like of that (again)’. Dawood said, ‘I did the like of that and I was as if I had been disentangled from a knot, and more than one person did that, so they all benefitted by it’.