Jami` at-Tirmidhi Book 48, Hadith 207
“The Messenger of Allah (ﷺ) stayed with my father.” So he said: “We brought some food near him, so he ate from it, then he was brought dates, so he would eat it and cast the pit with his two fingers” - he joined between his forefinger and middle finger - Shu`bah said: “And that is what I think concerning it, if Allah wills.” - “and he cast the pit between two fingers, then he was brought drink, so he drank it and then passed it to the one on his right.” He said: “So my father said - as he took hold of the rein of his beast: ‘Supplicate for us.’ So he said: ‘O Allah, bless for them what You have provided them, and forgive them, and have mercy on them (Allāhumma bārik lahum fī mā razaqtahum waghfir lahum warḥamhum).’”
“We went out on a rainy and extremely dark night, looking for the Messenger of Allah (ﷺ), so that he could lead us in Salat.” He said: “So I met him and he (ﷺ) said: ‘Speak’ but I did not say anything. Then he (ﷺ) said: ‘Speak.’ But I did not say anything. He (ﷺ) said: ‘Speak.’ So I said: ‘What should I say?’ He (ﷺ) said: ‘Say: “Say: He is Allah, the One” and Al-Mu`awwidhatain, when you reach evening, and when you reach morning, three times, they will suffice you against everything.’”
“My father narrated to me, from my grandfather, that he heard the Prophet (ﷺ) say: ‘Whoever says: “I seek forgiveness from Allah, the Magnificent, whom there is none worthy of worship but Him, the Living, Al-Qayyum, and I repent to him,” (Astaghfirullāhal-`Aẓīm alladhī lā ilāha illā huwal-Ḥayyul-Qayyūmu wa atūbu ilaih) then Allah will forgive him, even if he fled from battle.’”