[It is said:] "O soul at peace." This refers to the believer whose soul is tranquil and secure.
﴿يَا أيتها النَّفس المطمئنة﴾ وَهُوَ الْمُؤْمِنُ نَفْسُهُ مُطْمَئِنَّةٌ آمِنَةٌ
