Sahih Muslim · Hadith 1891

وحدثناه يحيى بن حبيب الحارثي، حدثنا خالد بن الحارث، ح وحدثنا عبيد، الله بن معاذ حدثنا أبي قالا، حدثنا شعبة، بهذا الإسناد نحوه وفي حديث خالد بن الحارث قال على راحلة يسير وهو يقرأ سورة الفتح ‏.‏

Al-Bara' reported that a person was reciting Surat al-Kahf and there was a horse tied with two ropes at his side, a cloud overshadowed him, and as it began to come nearer and nearer his horse began to take fright from it. He went and mentioned that to the Prophet (may peace be upon him) in the morning, and he (the Holy Prophet) said: That was tranquillity which came down at the recitation of the Qur'an.

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