مسند أحمد

It was narrated that `Uthman bin `Affan (رضي الله عنه) said: The Messenger of Allah (ﷺ) said: `There is no Muslim who leaves his house, intending to travel or otherwise, and says when leaving: `In the Name of Allah, I believe in Allah, I seek the protection of Allah, I put my trust in Allah, there is no strength and no power except with Allah, but he will be granted the goodness of that going out, and the evil of that going out will be diverted from him.”