12:20
وَ شَرَ وْ هُ بِ ثَمَنٍۭ بَخْسٍ دَرَٰهِمَ مَعْدُودَةٍ وَ كَانُ وا۟ فِي هِ مِنَ ٱل زَّٰهِدِينَ
And they sold him for a reduced price - a few dirhams - and they were, concerning him, of those content with little.
2:102
وَ ٱتَّبَعُ وا۟ مَا تَتْلُوا۟ ٱل شَّيَٰطِينُ عَلَىٰ مُلْكِ سُلَيْمَٰنَ وَ مَا كَفَرَ سُلَيْمَٰنُ وَ لَٰكِنَّ ٱل شَّيَٰطِينَ كَفَرُ وا۟ يُعَلِّمُ ونَ ٱل نَّاسَ ٱل سِّحْرَ وَ مَآ أُنزِلَ عَلَى ٱلْ مَلَكَيْنِ بِ بَابِلَ هَٰرُوتَ وَ مَٰرُوتَ وَ مَا يُعَلِّمَ انِ مِنْ أَحَدٍ حَتَّىٰ يَقُولَ آ إِنَّ مَا نَحْنُ فِتْنَةٌ فَ لَا تَكْفُرْ فَ يَتَعَلَّمُ ونَ مِنْ هُمَا مَا يُفَرِّقُ ونَ بِ هِۦ بَيْنَ ٱلْ مَرْءِ وَ زَوْجِ هِۦ وَ مَا هُم بِ ضَآرِّينَ بِ هِۦ مِنْ أَحَدٍ إِلَّا بِ إِذْنِ ٱللَّهِ وَ يَتَعَلَّمُ ونَ مَا يَضُرُّ هُمْ وَ لَا يَنفَعُ هُمْ وَ لَ قَدْ عَلِمُ وا۟ لَ مَنِ ٱشْتَرَىٰ هُ مَا لَ هُۥ فِى ٱلْ ءَاخِرَةِ مِنْ خَلَٰقٍ وَ لَ بِئْسَ مَا شَرَ وْا۟ بِ هِۦٓ أَنفُسَ هُمْ لَوْ كَانُ وا۟ يَعْلَمُ ونَ
And they followed [instead] what the devils had recited during the reign of Solomon. It was not Solomon who disbelieved, but the devils disbelieved, teaching people magic and that which was revealed to the two angels at Babylon, Harut and Marut. But the two angels do not teach anyone unless they say, "We are a trial, so do not disbelieve [by practicing magic]." And [yet] they learn from them that by which they cause separation between a man and his wife. But they do not harm anyone through it except by permission of Allah. And the people learn what harms them and does not benefit them. But the Children of Israel certainly knew that whoever purchased the magic would not have in the Hereafter any share. And wretched is that for which they sold themselves, if they only knew.
2:207
وَ مِنَ ٱل نَّاسِ مَن يَشْرِى نَفْسَ هُ ٱبْتِغَآءَ مَرْضَاتِ ٱللَّهِ وَ ٱللَّهُ رَءُوفٌۢ بِ ٱلْ عِبَادِ
And of the people is he who sells himself, seeking means to the approval of Allah. And Allah is kind to [His] servants.
4:74
فَ لْ يُقَٰتِلْ فِى سَبِيلِ ٱللَّهِ ٱلَّذِينَ يَشْرُ ونَ ٱلْ حَيَوٰةَ ٱل دُّنْيَا بِ ٱلْ ءَاخِرَةِ وَ مَن يُقَٰتِلْ فِى سَبِيلِ ٱللَّهِ فَ يُقْتَلْ أَوْ يَغْلِبْ فَ سَوْفَ نُؤْتِي هِ أَجْرًا عَظِيمًا
So let those fight in the cause of Allah who sell the life of this world for the Hereafter. And he who fights in the cause of Allah and is killed or achieves victory - We will bestow upon him a great reward.