إِذَا اسْتَأْذَنَ أَحَدُكُمْ ثَلاَثًا فَلَمْ يُؤْذَنْ لَهُ فَلْيَرْجِعْ
Abu Sa’id al-Khudri said: I was sitting in one of the meeting of the Ansar. Abu Musa came terrified. We asked him; what makes you terrified? He replied: ‘Umar sent for me; so I went to him and asked his permission three times, but he did not permit me (to enter), so I came back. He asked; what has prevented you from coming to me? I replied: I came and asked permission three times, but it was not granted to me (so I returned). The Messenger of Allah (May peace be upon him) has said: When one of you asks permission three times and it is not granted to him, he should go away. He (‘Umar’) said; establish the proof of it. So Abu Sa’id said: the youngest of the people will accompany you. So Abu Sa’id got up with him and testified.
مواضع دراسته في كتب التخريج والشروح
عون المعبود شرح سنن أبي داودج٤ ص٥١٠·أَبْوَابُ النَّوْمِ
شرح مشكل الآثارج٤ ص٢٤٤·بَابٌ بَيَانُ مُشْكِلِ مَا رُوِيَ عَنْ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فِي الِاسْتِئْذَانِ كَمْ هُوَ مِنْ مَرَّةٍج٤ ص٢٤٤·بَابٌ بَيَانُ مُشْكِلِ مَا رُوِيَ عَنْ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فِي الِاسْتِئْذَانِ كَمْ هُوَ مِنْ مَرَّةٍج٤ ص٢٤٤·بَابٌ بَيَانُ مُشْكِلِ مَا رُوِيَ عَنْ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فِي الِاسْتِئْذَانِ كَمْ هُوَ مِنْ مَرَّةٍ
إتحاف المهرة بالفوائد المبتكرة من أطراف العشرةج١٠ ص١١٨·عَبْدِ اللَّهِ بْنِ قَيْسٍ أَبُو مُوسَى الْأَشْعَرِيُّج٥ ص١٧٢·أبو سَعِيدٍ الْخُدْرِيِّ
تحفة الأشراف بمعرفة الأطرافج٣ ص٣٣٣·حرف السين