The living and the dead
مَثَلُ الَّذِي يَذْكُرُ رَبَّهُ وَالَّذِي لَا يَذْكُرُ رَبَّهُ، مَثَلُ الْحَيِّ وَالْمَيِّتِ
Mathalu-lladhi yadhkuru Rabbahu wa-lladhi la yadhkuru Rabbahu, mathalu-l-hayyi wa-l-mayyit.
"The example of one who remembers his Lord and one who does not is like the living and the dead."
Narrated by Abu Musa al-Ash'ari. Sahih al-Bukhari 6407
A short reflection
Dhikr isn't an extra. It's the heartbeat. A day without remembrance is moving but not alive.