Musannaf Ibn Abi Shaybah 38797 — the first to do a thing, and who did

It is narrated from Sayyiduna Salman (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "The first glad tidings given to the believer will be of rest, fragrance and a Garden of bliss. The first glad tidings given to the believer will be that he is told: 'O friend of Allah! Glad tidings to you. You have arrived at the best of arrivals. May Allah forgive those who followed behind you.'" Abu Abdullah said: Only this one shaykh transmitted this hadith. "'And may Allah answer those who sought forgiveness for you, and accept the word of those who testified in your favour.'"