Sahih Bukhari 4

قَالَ ابْنُ شِهَابٍ : وَأَخْبَرَنِي أَبُو سَلَمَةَ بْنُ عَبْدِ الرَّحْمَنِ ، أَنَّ جَابِرَ بْنَ عَبْدِ اللَّهِ الْأَنْصَارِيَّ ، قَالَ وَهُوَ يُحَدِّثُ عَنْ فَتْرَةِ الْوَحْيِ ، فَقَالَ فِي حَدِيثِهِ : بَيْنَا أَنَا أَمْشِي إِذْ سَمِعْتُ صَوْتًا مِنَ السَّمَاءِ فَرَفَعْتُ بَصَرِي ، فَإِذَا الْمَلَكُ الَّذِي جَاءَنِي بِحِرَاءٍ جَالِسٌ عَلَى كُرْسِيٍّ بَيْنَ السَّمَاءِ وَالْأَرْضِ ، فَرُعِبْتُ مِنْهُ فَرَجَعْتُ ، فَقُلْتُ : زَمِّلُونِي ، فَأَنْزَلَ اللَّهُ تَعَالَى : يَأَيُّهَا الْمُدَّثِّرُ { 1 } قُمْ فَأَنْذِرْ { 2 } سورة المدثر آية 1-2 ، فَحَمِيَ الْوَحْيُ وَتَتَابَعَ ، تَابَعَهُ عَبْدُ اللَّهِ بْنُ يُوسُفَ ، وَأَبُو صَالِحٍ ، وَتَابَعَهُ هِلَالُ بْنُ رَدَّادٍ ، عَنِ الزُّهْرِيِّ ، وَقَالَ يُونُسُ ، وَمَعْمَرٌ بَوَادِرُهُ .

Narrated Jabir bin 'Abdullah Al-Ansari while talking about the period of pause in revelation reporting the speech of the Prophet While I was walking, all of a sudden I heard a voice from the sky. I looked up and saw the same angel who had visited me at the cave of Hira' sitting on a chair between the sky and the earth. I got afraid of him and came back home and said, 'Wrap me (in blankets).' And then Allah revealed the following Holy Verses (of Quran): 'O you (i.e. Muhammad)! wrapped up in garments!' Arise and warn (the people against Allah's Punishment),... up to 'and desert the idols.' (74.1-5) After this the revelation started coming strongly, frequently and regularly.