Hadis Al-Bara' bin Aazib r.a katanya:
Seorang lelaki sedang membaca surah Al-Kahfi dan bersamanya seekor kuda yang terikat dengan tali yang panjang, tiba-tiba kepulan awan datang menutupi kuda dan berputar di sekitar kudanya, keadaan ini membuatkan kudanya lari. Apabila tiba waktu pagi beliau datang menemui Nabi s.a.w dan memberitahu hal tersebut kepada baginda, lalu baginda bersabda: Itulah ketenangan yang diturunkan kerana Al-Quran.
Nombor hadith di dalam Sahih Muslim : 1325
Al-Bara' bin 'Azib, may Allah be pleased with him, reported:
A person was reciting surah 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. Hadith number in Sahih Muslim [Arabic only]: 1325