Abu Musa reported God’s messenger as saying, “He who remembers his Lord and he who does not are like the living and the dead.” (Bukhari and Muslim.)

وَعَنْ أَبِي مُوسَى قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «مَثَلُ الَّذِي يَذْكُرُ رَبَّهُ وَالَّذِي لَا يَذْكُرُ مَثَلُ الْحَيّ وَالْمَيِّت»