It wasnarrated from Abu Hurairah that the Messenger of Allah (ﷺ)said toa man:
"I advise you to fear Allah and to say the Takbir(AllahuAkbar) in every high place." (FR)
English reference (FR): Vol. 4, Book 24, Hadith 2771 (FR)
Arabic reference (FR): Book 24, Hadith 2876 (FR)