Mishkat al-Masabih
Mishkat al-Masabih 2117
وَعَنِ الْبَرَاءِ بْنِ عَازِبٍ قَالَ: كَانَ رَجُلٌ يَقْرَأُ سُورَةَ الْكَهْفِ وَإِلَى جَانِبِهِ حِصَانٌ مَرْبُوطٌ بِشَطَنَيْنِ فَتَغَشَّتْهُ سَحَابَةٌ فَجَعَلَتْ تَدْنُو وَتَدْنُو وَجَعَلَ فَرَسُهُ يَنْفِرُ فَلَمَّا أَصْبَحَ أَتَى النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَذَكَرَ ذَلِكَ لَهُ فَقَالَ: «تِلْكَ السكينَة تنزلت بِالْقُرْآنِ»
Unreviewed translation. All hadiths in this collection are available in five languages. Titles and introductions may remain in Arabic.
Al-Bara ibn Azib said: A man was reciting Surat al-Kahf, and beside him was a horse tethered by two ropes. A cloud covered him and began drawing nearer and nearer, while his horse began to shy. In the morning he went to the Prophet (peace and blessings be upon him) and told him about it. He said: ‘That was the sakinah, descending with the Quran.’