Riyad as-Salihin: The Book of Etiquette of Traveling – Hadith No. 300 — Abu Musa Al-Ash’ari (May Allah be pleased with him) reported: We accompanied… (Hadith No. 300)

Abu Musa Al-Ash'ari (May Allah be pleased with him) reported: We accompanied the Prophet (ﷺ) in a journey, and when we climbed up a height, we proclaimed aloud: "La ilaha illallah (There is no true god except Allah)" and "Allahu Akbar (Allah is Greatest)." The Prophet (ﷺ) admonished us saying, "O people, take it easy. He Whom you are calling is not deaf or absent. He is with you (i.e., by His Knowledge), He is Hearing and He is Near.".

Explanation:

Reference: Riyad as-Salihin, The Book of Etiquette of Traveling, Hadith No. 300