Surah At-Tawbah 9:111

۞ إِنَّ ٱللَّهَ ٱشْتَرَىٰ مِنَ ٱلْمُؤْمِنِينَ أَنفُسَهُمْ وَأَمْوَٰلَهُم بِأَنَّ لَهُمُ ٱلْجَنَّةَ ۚ يُقَـٰتِلُونَ فِى سَبِيلِ ٱللَّهِ فَيَقْتُلُونَ وَيُقْتَلُونَ ۖ وَعْدًا عَلَيْهِ حَقًّا فِى ٱلتَّوْرَىٰةِ وَٱلْإِنجِيلِ وَٱلْقُرْءَانِ ۚ وَمَنْ أَوْفَىٰ بِعَهْدِهِۦ مِنَ ٱللَّهِ ۚ فَٱسْتَبْشِرُوا۟ بِبَيْعِكُمُ ٱلَّذِى بَايَعْتُم بِهِۦ ۚ وَذَٰلِكَ هُوَ ٱلْفَوْزُ ٱلْعَظِيمُ

Indeed, Allāh has purchased from the believers their lives and their properties [in exchange] for that they will have Paradise. They fight in the cause of Allāh, so they kill and are killed. [It is] a true promise [binding] upon Him in the Torah and the Gospel and the Qur’ān. And who is truer to his covenant than Allāh? So rejoice in your transaction which you have contracted. And it is that which is the great attainment.

Translation: Saheeh International

Tafsir

Indeed God has purchased from the believers their lives and their possessions that they expend it in obedience of Him — for example by striving in His way — so that theirs will be the reward of Paradise they shall fight in the way of God and they shall kill and be killed this sentence is independent and constitutes an …

Excerpt from Tafsir al-Jalalayn, commentary on 9:111, via Quran.com. The reader has the full commentary and 9 more tafsirs.