Jami` at-Tirmidhi Book 48, Hadith 211
“I heard the Messenger of Allah (ﷺ) saying; ‘Indeed, Allah, the Mighty and Sublime, says: “Indeed My worshipper who is entirely My slave is the one who remembers Me when he is about to meet his enemy.” That is: “At the time of fighting.”
`Amr bin `Abasah reported to me that he heard the Prophet (ﷺ) say: “The closest that the Lord is to a worshipper is during the last part of the night, so if you are able to be of those who remember Allah in that hour, then do so.”
that his father offered him to the Prophet (ﷺ) to serve him. He said: “So the Prophet (ﷺ) passed by me, and I had just performed Salat, so he poked me with his foot and said: ‘Should I not direct you to a gate from the gates of Paradise?’ I said: ‘Of course.’ He (ﷺ) said: ‘There is no might or power except with Allah (Lā ḥawla wa lā quwwata illā billāh).’”