A man recited Surat-al-Kahf (in his prayer) and in the house there was a (riding) animal which got frightened and started jumping. The man finished his prayer with Taslim, but behold! A mist or a cloud hovered over him. He informed the Prophet ﷺ of that and the Prophet ﷺ said, "O so-and-so! Recite, for this (mist or cloud) was a sign of peace descending for the recitation of Qur'an."  

سَمِعْتُ الْبَرَاءَ بْنَ عَازِبٍ ؓ قَرَأَ رَجُلٌ الْكَهْفَ وَفِي الدَّارِ الدَّابَّةُ فَجَعَلَتْ تَنْفِرُ فَسَلَّمَ فَإِذَا ضَبَابَةٌ أَوْ سَحَابَةٌ غَشِيَتْهُ فَذَكَرَهُ لِلنَّبِيِّ ﷺ فَقَالَ اقْرَأْ فُلاَنُ فَإِنَّهَا السَّكِينَةُ نَزَلَتْ لِلْقُرْآنِ أَوْ تَنَزَّلَتْ لِلْقُرْآنِ  

hearing Al-Bara say: "There was a man reciting [Surat] Al-Kahf when he saw his riding animal stamping his feet, so he looked and there was something like a shadow or cloud, so he went to the Messenger of Allah ﷺ and mentioned that to him. The Prophet ﷺ said: "That was the tranquility which descends with the Qur'an, or descends because of the Qur'an."  

سَمِعْتُ الْبَرَاءَ بْنَ عَازِبٍ يَقُولُ بَيْنَمَا رَجُلٌ يَقْرَأُ سُورَةَ الْكَهْفِ إِذْ رَأَى دَابَّتَهُ تَرْكُضُ فَنَظَرَ فَإِذَا مِثْلُ الْغَمَامَةِ أَوِ السَّحَابَةِ فَأَتَى رَسُولَ اللَّهِ ﷺ فَذَكَرَ ذَلِكَ لَهُ فَقَالَ النَّبِيُّ ﷺ تِلْكَ السَّكِينَةُ نَزَلَتْ مَعَ الْقُرْآنِ أَوْ نَزَلَتْ عَلَى الْقُرْآنِ وَفِي الْبَابِ عَنْ أُسَيْدِ بْنِ حُضَيْرٍ  

I heard al-Bara' as saying that a man recited al-Kahf when an animal was there in the house and it began to take fright. And as he looked around, he found a cloud overshadowing it. He mentioned that to the Messenger of Allah ﷺ. Upon this he said: O so and so, recite on (the surah) as- Sakina descends at the (recitation of the Qur'an) or on account (of the recitation) of the Qur'an. (Using translation from Muslim 795b)  

سَمِعْتُ الْبَرَاءَ يَقُولُ قَرَأَ رَجُلٌ الْكَهْفَ وَفِي الدَّارِ دَابَّةٌ فَجَعَلَتْ تَنْفِرُ فَنَظَرَ فَإِذَا ضَبَابَةٌ أَوْ سَحَابَةٌ قَدْ غَشِيَتْهُ قَالَا فَذَكَرَ ذَلِكَ لِلنَّبِيِّ ﷺ فَقَالَ اقْرَأْ فُلَانُ فَإِنَّهَا السَّكِينَةُ تَنَزَّلَتْ عِنْدَ الْقُرْآنِ أَوْ تَنَزَّلَتْ لِلْقُرْآنِ  

[Machine] A man read Surah Al-Kahf while he had a tied-up animal. The animal became restless, so the man looked up and saw a cloud covering him or a mist. He got scared and went to the Prophet ﷺ . I asked if the Prophet ﷺ mentioned that man. He said yes, and then I said, "Who is that man?" He replied, "That man is so-and-so." I said, "He was reading Surah Al-Kahf, and tranquility descended upon him, or it was found nearby him."  

قَرَأَ رَجُلٌ سُورَةَ الْكَهْفِ وَلَهُ دَابَّةٌ مَرْبُوطَةٌ فَجَعَلَتِ الدَّابَّةُ تَنْفِرُ فَنَظَرَ الرَّجُلُ إِلَى سَحَابَةٍ قَدْ غَشِيَتْهُ أَوْ ضَبَابَةٍ فَفَزِعَ فَذَهَبَ إِلَى النَّبِيِّ ﷺ قُلْتُ سَمَّى النَّبِيُّ ﷺ ذَاكَ الرَّجُلَ؟ قَالَ نَعَمْ فَقَالَ اقْرَأْ فُلَانُ فَإِنَّ السَّكِينَةَ نَزَلَتْ لِلْقُرْآنِ أَوْ عِنْدَ الْقُرْآنِ  

[Machine] "I heard Al-Bara'ah saying that there was a man who used to recite Surat Al-Kahf and his horse was tied up, and it became restless and started to move around, appearing like a mist or cloud that had surrounded him. So he came to the Prophet ﷺ and mentioned this to him, and the Prophet ﷺ said, 'Recite, O so and so, for that is tranquility that descended due to the recitation of the Quran.'"  

سَمِعْتُ الْبَرَاءَ يَقُولُ إِنَّ رَجُلًا كَانَ يَقْرَأُ سُورَةَ الْكَهْفِ وَدَابَّتُهُ مُوثَقَةٌ فَجَعَلَتْ تَنْفِرُ تَرَى مِثْلَ الضَّبَابَةِ أَوِ الْغَمَامَةِ قَدْ غَشِيَتْهُ فَأَتَى النَّبِيَّ ﷺ فَذَكَرَ ذَلِكَ لَهُ فَقَالَ «اقْرَأْ يَا فُلَانُ تِلْكَ السَّكِينَةُ أُنْزِلَتْ عِنْدَ الْقُرْآنِ أَوْ لِلْقُرْآنِ»