Al-Khatib reported: Qasim al-Ju’i, may Allah have mercy on him, said, “The religion is based upon cautious piety. The best worship is undertaken at night, and the best of paths to Paradise is to have a pure heart.”
Source: al-Zuhd wal-Raqāʼiq 32
عن الخطيب عن قاسم الجوعي رحمه الله قال أَصْلُ الدِّينِ الْوَرَعُ وَأَفْضَلُ الْعِبَادَةِ مُكَابَدَةُ اللَّيْلِ وَأَفْضَلُ طُرُقِ الْجَنَّةِ سَلَامَةُ الصَّدْرِ
32 الزهد والرقائق للخطيب البغدادي