Abu Nu’aym reported: Abu Sulayman, may Allah have mercy on him, said, “Thinking about the world is a veil over the Hereafter and a punishment for people. Thinking about the Hereafter produces wisdom and life in the heart. Whoever looks to the world as his protector will come to accept its delusions.”
Source: Ḥilyat al-Awliyā’ 14447
عن أبي نعيم قال أبو سليمان رحمه الله الْفِكْرُ فِي الدُّنْيَا حِجَابٌ عَنِ الآخِرَةِ وَعُقُوبَةٌ لأَهْلِ الْوَلايَةِ وَالْفِكْرَةُ فِي الآخِرَةِ تُورِثُ الْحِكْمَةَ وَتُحْيِي الْقَلْبَ وَمَنْ نَظَرَ إِلَى الدُّنْيَا مُوَلِّيَةً صَحَّ عِنْدَهُ غُرُورُهَا
14447 حلية الأولياء لأبي نعيم أبو سليمان الداراني