12ـ عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنِ ابْنِ أَبِي عُمَيْرٍ عَنِ الْعَلاءِ بْنِ الْمُقْعَدِ قَالَ سَمِعْتُ أَبَا عَبْدِ الله (عَلَيْهِ السَّلاَم) يَقُولُ إِنَّ مَلَكاً مُوَكَّلاً بِالرُّكْنِ الْيَمَانِيِّ مُنْذُ خَلَقَ الله السَّمَاوَاتِ وَالأَرَضِينَ لَيْسَ لَهُ هِجِّيرٌ إِلاَّ التَّأْمِينَ عَلَى دُعَائِكُمْ فَلْيَنْظُرْ عَبْدٌ بِمَا يَدْعُو فَقُلْتُ لَهُ مَا الْهِجِّيرُ فَقَالَ كَلامٌ مِنْ كَلامِ الْعَرَبِ أَيْ لَيْسَ لَهُ عَمَلٌ وَفِي رِوَايَةٍ أُخْرَى لَيْسَ لَهُ عَمَلٌ غَيْرُ ذَلِكَ.
12. Ali ibn Ibrahim has narrated from his father from ibn abu ‘ Umayr from al-‘ Ala’ ibn al-Muq‘ad who has said the following: “I once heard abu ‘ Abd Allah (a.s.), say, ‘There is an angel assigned on al-Yemaniy corner from the time Allah created the heavens and the earth. This angel has no Hijjir except saying, ‘Amen’ for your prayers, so a servant of Allah should consider what to appeal for in his prayer.’ I (the narrator) then asked, ‘What is al-Hijjir?’ He (the Imam) replied, ‘It is the expression of Arabs, meaning he has nothing to do but to do so and so. In another Hadith it says, ‘He (the angel) has no other task but that (saying Amen)”’