A transaction offered as a rescue

يَـٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوا۟ هَلْ أَدُلُّكُمْ عَلَىٰ تِجَـٰرَةٍ تُنجِيكُم مِّنْ عَذَابٍ أَلِيمٍ تُؤْمِنُونَ بِٱللَّهِ وَرَسُولِهِۦ وَتُجَـٰهِدُونَ فِى سَبِيلِ ٱللَّهِ بِأَمْوَٰلِكُمْ وَأَنفُسِكُمْ ۚ ذَٰلِكُمْ خَيْرٌ لَّكُمْ إِن كُنتُمْ تَعْلَمُونَ

“O you who have believed, shall I guide you to a transaction that will save you from a painful punishment? [It is that] you believe in Allāh and His Messenger and strive in the cause of Allāh with your wealth and your lives. That is best for you, if you only knew.”