The concept of heedlessness (ghaflah) in Islam refers to being inattentive to Allah, His commands, and the realities of life, death, and the Hereafter.

The Prophet Muhammad (ﷺ) said:
“The difference between the one who remembers Allah and the one who does not is like the difference between the living and the dead.”
(Sahih al-Bukhari, Hadith 6407; Sahih Muslim, Hadith 779)