Sahih Bukhari · Hadith 3657

حدثني محمد بن بشار، حدثنا غندر، حدثنا شعبة، عن أبي إسحاق، سمعت البراء بن عازب رضى الله عنهما قرأ رجل الكهف وفي الدار الدابة فجعلت تنفر فسلم، فإذا ضبابة أو سحابة غشيته، فذكره للنبي صلى الله عليه وسلم فقال ‏"‏ اقرأ فلان، فإنها السكينة نزلت للقرآن، أو تنزلت للقرآن ‏"‏‏.‏

Narrated Al-Bara' bin `Azib: 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 of that and the Prophet said, "O so-and-so! Recite, for this (mist or cloud) was a sign of peace descending for the recitation of Qur'an."

Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).