The Quran

يا أَيُّهَا النّاسُ اتَّقوا رَبَّكُم وَاخشَوا يَومًا لا يَجزي والِدٌ عَن وَلَدِهِ وَلا مَولودٌ هُوَ جازٍ عَن والِدِهِ شَيئًا ۚ إِنَّ وَعدَ اللَّهِ حَقٌّ ۖ فَلا تَغُرَّنَّكُمُ الحَياةُ الدُّنيا وَلا يَغُرَّنَّكُم بِاللَّهِ الغَرورُ

Muhammad Asad

O MEN! Be conscious of your Sustainer, and stand in awe of the Day on which no parent will be of any avail to his child, nor a child will in the least avail his parent! Verily, God's promise [of resurrection] is true indeed: let not, then, the life of this world delude you,and let not [your own] deceptive thoughts about God delude you!¹

For instance, the self-deluding expectation, while deliberately committing a sin, that God will forgive it (Sa'id ibn Jubayr, as quoted by Tabari, Baghawi, Zamakhshari). According to Tabari, the term gharur denotes "anything that deludes" (ma gharra) a person in the moral sense, whether it be Satan, or another human being, or an abstract concept, or (as in 57:14) "wishful thinking".