Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
quran:9:111 –

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

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 explication of the ˹above-mentioned˺ ‘purchase’; a variant reading has the passive verb come first ˹sc. fa-yuqtalūna wa-yaqtulūn, ‘they shall be killed and shall kill’˺, meaning that some of them are killed while those who remain, fight on); that is a promise which is binding (both ˹wa‘dan, ‘promise’, and haqqan, ‘binding’˺ are verbal nouns, and are in the accusative on account of their omitted ˹implicit˺ verbs) upon Him in the Torah and the Gospel and the Qur’ān; and who fulfils his covenant better than God?, that is, no one is better in fulfilling it. Rejoice then (there is a shift from the third ˹to second˺ person here) in this bargain of yours which you have made, for that, bargain, is the supreme triumph, the one that secures the ultimate goal.
القرآن:٩:١١١ –

إِنَّ اللَّهَ اشْتَرَىٰ مِنَ الْمُؤْمِنِينَ أَنْفُسَهُمْ وَأَمْوَالَهُمْ بِأَنَّ لَهُمُ الْجَنَّةَ ۚ يُقَاتِلُونَ فِي سَبِيلِ اللَّهِ فَيَقْتُلُونَ وَيُقْتَلُونَ ۖ وَعْدًا عَلَيْهِ حَقًّا فِي التَّوْرَاةِ وَالْإِنْجِيلِ وَالْقُرْآنِ ۚ وَمَنْ أَوْفَىٰ بِعَهْدِهِ مِنَ اللَّهِ ۚ فَاسْتَبْشِرُوا بِبَيْعِكُمُ الَّذِي بَايَعْتُمْ بِهِ ۚ وَذَٰلِكَ هُوَ الْفَوْزُ الْعَظِيمُ  

{إن الله اشترى من المؤمنين أنفسهم وأموالهم} بأن يبذلوها في طاعته كالجهاد {بأن لهم الجنة يقاتلون في سبيل الله فيَقتلون ويُقتلون} جملة استئناف بيان للشراء، وفي قراءة بتقديم المبني للمفعول، أي فيقتل بعضهم ويقاتل الباقي {وعدا عليه حقا} مصدران منصوبان بفعلهما المحذوف {في التوراة والإنجيل والقرآن ومن أوفي بعهده من الله} أي لا أحد أوفى منه {فاستبشروا} فيه التفات عن الغيبة {ببيعكم الذي بايعتم به وذلك} البيع {هو الفوز العظيم} المنيل غاية المطلوب.