Narrated from Sayyiduna Sa'd bin Malik (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: The best remembrance is that which is hidden, and the best provision is that which suffices.

It is narrated from Sayyiduna Abu Musa Ash'ari (may Allah be pleased with him), he says: I was with the Messenger of Allah (peace and blessings be upon him) in a battle. When we would ascend to a high place or climb up and descend into a valley, we would recite the takbir loudly. The Messenger of Allah (peace and blessings be upon him) came close to us and said: O people! Be gentle with yourselves. Indeed, you are not calling upon one who is deaf or absent, but you are calling upon One who is All-Hearing and All-Seeing. Indeed, the One you are mentioning is closer to you than the neck of your mount. O Abdullah! Shall I not teach you a word which is from the treasures of Paradise? That word is: "La hawla wa la quwwata illa billah" (There is no power to avoid evil and no strength to do good except by Allah’s help).