٤ـ عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ سَهْلِ بْنِ زِيَادٍ عَنْ جَعْفَرِ بْنِ مُحَمَّدٍ الأشْعَرِيِّ عَنِ ابْنِ الْقَدَّاحِ عَنْ أَبِي عَبْدِ الله (عَلَيهِ السَّلام) قَالَ قَالَ أَمِيرُ الْمُؤْمِنِينَ (عَلَيهِ السَّلام) الدُّعَاءُ تُرْسُ الْمُؤْمِنِ وَمَتَى تُكْثِرْ قَرْعَ الْبَابِ يُفْتَحْ لَكَ.
4. A number of our people have narrated from Sahl ibn Ziyad from Ja’far ibn Muhammad al-Ash’ari from ibn al-Qaddah from Abu ‘Abdillah  who has said the following: “Amir al-Mu’minin, Ali ibn abu Talib  has said, ‘Prayer is a shield for a believing person. When a door is knocked often it will sooner or later open up.’” 