Nahj al-Balāgha
Hadith 1637فَإِنَّ النَّاسَ قَدْ تَغَيَّرَ كَثِيرٌ مِنْهُمْ عَنْ كَثِيرٍ مِنْ حَظِّهِمْ، فَمَالُوا مَعَ الدُّنْيَا، وَنَطَقُوا بِالْهَوى، وَإِنِّي نَزَلْتُ مِنْ هَذَا الْأَمْرِ مَنْزِلًا مُعْجِباً، اجْتَمَعَ بِهِ أَقْوَامٌ أَعْجَبَتْهُمْ أَنْفُسُهُمْ، فإنِّي [وَأَنَا] أُدَاوِي مِنْهُمْ قَرْحاً أَخَافُ أَنْ يَكُونَ عَلَقاً.
Certainly, many people have turned away from many a (lasting) benefit (of the next life), for they bent towards the world and spoke with passions. I have been struck with wonder in this matter, upon which people who are self-conceited have agreed. I am providing a cure for their wound but I fear lest it develops into a clot of blood (and becomes incurable).