Majma al-Zawaid — Hadith 7120

Abu Salamah narrates: Sayyiduna Mu'adh (may Allah be pleased with him) said: I said: "O Messenger of Allah, give me counsel!" He said: "Worship Allah Almighty as though you see Him; count yourself among the dead; remember Allah beside every stone and tree; and when you commit an evil deed, do a good deed immediately after it: secret for secret and open for open."
Al-Tabarani recorded it; the narrator Abu Salamah did not live in the time of Sayyiduna Mu'adh (may Allah be pleased with him), and its narrators are thiqat (trustworthy).