The Messenger of Allah ﷺ said to a man, "I advise you to fear Allah and to say takbir upon every elevated ground."
حدثنا أبو بكر بن أبي شيبة حدثنا وكيع عن أسامة بن زيد عن سعيد المقبري
أن رسول الله ﷺ قال لرجل أوصيك بتقوى الله والتكبير على كل شرف
[Its chain of transmission is hasan]Reported by Tirmidhi, Chapter on Supplications, section [His advice to the traveler, etc.], hadith no. 3445, from the hadith of Usama, through this same chain. He said, This is a hasan hadith. Ibn Hibban also graded it sahih (Mawarid), 2378, 2379, as did Hakim, who said it meets the criteria of Muslim, 445–446/1, 98/2, and Dhahabi concurred with him. Baghawi said in Sharh al-Sunnah, 143/5, This is a hasan hadith. It is also found in Musannaf of Ibn Abu Shayba, 359/10, 517/12.