صحيح ابن خزيمه
Sahih Ibn Khuzaymah
كتاب الإمامة فى الصلاة وما فيها من السنن مختصر من كتاب المسندBook of Imamate in Prayer (Abridged from Musnad)
(38) بَابُ الرُّخْصَةِ فِي صَلَاةِ الْإِمَامِ الْأَعْظَمِ خَلْفَ مَنْ أَمَّ النَّاسَ مِنْ رَعِيَّتِهِ، وَإِنْ كَانَ الْإِمَامُ مِنَ الرَّعِيَّةِ يَؤُمُّ النَّاسَ بِغَيْرِ إِذْنِ الْإِمَامِ الْأَعْظَمِ38| Concession for the supreme imam to pray behind one of his subjects, even if he leads without the supreme imam's permission
Hadith 1515Q
وَإِنْ كَانَ الْإِمَامُ مِنَ الرَّعِيَّةِ يَؤُمُّ النَّاسَ بِغَيْرِ إِذَنِ الْإِمَامِ الْأَعْظَمِ قَالَ أَبُو بَكْرٍ: خَبَرُ الْمُغِيرَةِ بْنِ شُعْبَةَ فِي إِمَامَةِ عَبْدِ الرَّحْمَنِ بْنِ عَوْفٍ
Even if the imam leading the people from among the subjects has not taken permission from the chief imam. Imam Abu Bakr, may Allah have mercy on him, says that the evidence for this issue is the hadith of Sayyiduna Mughira bin Shu’bah, may Allah be pleased with him, narrated regarding the leadership of Sayyiduna Abdur Rahman bin Awf, may Allah be pleased with him.
