Benefit: Saying Bismillāh
In the Name of Allāh, the Ever Merciful, the Bestower of Mercy
Answer: Mentioning the name of Allāh—the Exalted and the Sublime—and saying "bismillāh" is considered to be from fortifying oneself with the remembrance of Allāh. It is legislated [to mention the name of Allāh] except in cases where one is entering places for relieving oneself, in this case one must not mention Allāh until he exits this place, although one may still remember Allāh in his heart but not with his tongue.
Shaykh Ṣāliḥ ibn Fawzān al-Fawzān
Source: قول بسم الله
Translated by: Munīb al-Ṣumālī