Musnad Ahmad Hadith 19648

It is narrated from Abu Musa (may Allah be pleased with him) that once we were with the Prophet Muhammad (ﷺ) on a journey of jihad. Whenever we ascended a hill or a high place or descended into a valley, we would say Takbeer in a loud voice. The Prophet Muhammad (ﷺ) came close to us and said: "People! Be gentle with yourselves. You are not calling upon a deaf or absent Allah; you are calling upon the All-Hearing, the All-Seeing, who is closer to you than the neck of your mount. O Abdullah bin Qais, shall I not tell you about one of the treasures of Paradise?" I said, "Why not?" He said, "La hawla wa la quwwata illa billah (There is no power and no strength except with Allah) is one of the treasures of Paradise."