51:55
وَذَكِّرْ فَاِنَّ الذِّكْرٰى تَنْفَعُ الْمُؤْمِنٖینَ
Wathakkir fainna alththikra tanfaAAu almumineena
Translations
And remind, for indeed, the reminder benefits the believers
Saheeh International
And warn, for warning profiteth believers
Marmaduke Pickthall