[Machine] Luqman used to say, "O my son, do not acquire knowledge to show off to the scholars, to argue with the ignorant, or to impress others in gatherings." Then his son mentioned and said, "He narrated to us that Nawfal bin Musahiq informed us on the authority of Sa'id bin Zaid, who narrated from the Prophet ﷺ that he said, 'One of the greatest forms of usury is to violate the honor of a Muslim unjustly. Verily, this womb is a part of the Merciful (Allah). So whoever severs it, Allah has forbidden Paradise to him.'"  

أَنَّ لُقْمَانَ كَانَ يَقُولُ يَا بُنَيَّ لَا تَعَلَّمِ الْعِلْمَ لِتُبَاهِيَ بِهِ الْعُلَمَاءَ أَوْ تُمَارِيَ بِهِ السُّفَهَاءَ وَتُرَائِيَ بِهِ فِي الْمَجَالِسِ فَذَكَرَهُوَقَالَ حَدَّثَنَا نَوْفَلُ بْنُ مُسَاحِقٍ عَنْ سَعِيدِ بْنِ زَيْدٍ عَنِ النَّبِيِّ ﷺ أَنَّهُ قَالَ مِنْ أَرْبَى الرِّبَا الاسْتِطَالَةُ فِي عِرْضِ الْمُسْلِمِ بِغَيْرِ حَقٍّ وَإِنَّ هَذِهِ الرَّحِمَ شِجْنَةٌ مِنَ الرَّحْمَنِ فَمَنْ قَطَعَهَا حَرَّمَ اللهُ عَلَيْهِ الْجَنَّةَ