19:39

وَأَنذِرْهُمْ يَوْمَ ٱلْحَسْرَةِ إِذْ قُضِىَ ٱلْأَمْرُ وَهُمْ فِى غَفْلَةٍ وَهُمْ لَا يُؤْمِنُونَ

wa-andhir'hum yawma l-ḥasrati idh quḍiya l-amru wahum fī ghaflatin wahum lā yu'minūna

And warn them, [O Muḥammad], of the Day of Regret, when the matter will be concluded; and [yet], they are in [a state of] heedlessness, and they do not believe.

— Saheeh International

for they are heedless and do not believe.

— M. A. S. Abdel Haleem

And warn them (O Muhammad صلى الله عليه وسلم) of the Day of grief and regrets, when the case has been decided, while (now) they are in a state of carelessness, and they believe not.

— Muhammad Muhsin Khan & Muhammad Taqi-ud-Din al-Hilali

Word by Word

وَأَنذِرْهُمْwa-andhir'humAnd warn them

يَوْمَyawma(of the) Day

ٱلْحَسْرَةِl-ḥasrati(of) the Regret

إِذْidhwhen

قُضِىَquḍiyahas been decided

ٱلْأَمْرُl-amruthe matter

وَهُمْwahumAnd they

فِىfī(are) in

غَفْلَةٍۢghaflatinheedlessness

وَهُمْwahumand they

لَاlā(do) not

يُؤْمِنُونَyu'minūnabelieve