مَثَلُ الَّذِي يَذْكُرُ رَبَّهُ وَالَّذِي لاَ يَذْكُرُ رَبَّهُ مَثَلُ الْحَىِّ وَالْمَيِّتِ
Abu Musa al-Ash'ari reported: The Messenger of Allah (ﷺ) said, "The example of the one who remembers his Lord and the one who does not remember his Lord is like the living and the dead."
Sahih Bukhari·6407
dhikr