The Quran

يَومَ تَرَى المُؤمِنينَ وَالمُؤمِناتِ يَسعىٰ نورُهُم بَينَ أَيديهِم وَبِأَيمانِهِم بُشراكُمُ اليَومَ جَنّاتٌ تَجري مِن تَحتِهَا الأَنهارُ خالِدينَ فيها ۚ ذٰلِكَ هُوَ الفَوزُ العَظيمُ

Muhammad Asad

on the Day when thou shalt see all believing men and believing women, with their light spreading rapidly before them and on their right,¹ [and with this welcome awaiting them:] "A glad tiding for you today: gardens through which running-waters flow, therein to abide! This, this is the triumph supreme!"

See note 25 on the expression ashab al-yamin ("those on the right hand") in 74:39. In many instances, the metaphor of "the right hand" or "right side" is used in the Qur'an to denote "righteousness" and, therefore, "blessedness", symbolized in the present context by the "light spreading rapidly" before and on the right side of the believers as a result of their "cognition of God, and their high morality, and their freedom from ignorance and blameworthy traits" (Razi).