When the Prophet (ﷺ) wanted to say farewell to an army, he would say: I entrust to Allah your religion, what you are responsible for, and your final deeds.
Sunan Abi Dawud Book 15, Hadith 125
← Previous Hadith Qaza’ah said Ibn ‘Umar told me “Come, I see off you as the Apostle of Allaah(ﷺ) saw me off. I entrust to Allaah your religion what you are responsible for and your final deeds.”

Sunan Abi Dawud Book 15, Hadith 124 Next Hadith → Ali ibn Rabi'ah said: I was present with Ali while a beast was brought to him to ride. When he put his foot in the stirrup, he said: "In the name of Allah." Then when he sat on its back, he said: "Praise be to Allah." He then said: "Glory be to Him Who has made this subservient to us, for we had not the strength, and to our Lord do we return." He then said: "Praise be to Allah (thrice); Allah is Most Great (thrice): glory be to Thee, I have wronged myself, so forgive me, for only Thou forgivest sins." He then laughed. He was asked: At what did you laugh? He replied: I saw the Messenger of Allah (ﷺ) do as I have done, and laugh after that. I asked: Messenger of Allah , at what are you laughing? He replied: Your Lord, Most High, is pleased with His servant when he says: "Forgive me my sins." He know that no one forgives sins except Him.

Sunan Abi Dawud Book 15, Hadith 126