أَخْبَرَنَا بِشْرُ بْنُ الْحَكَمِ ، حَدَّثَنَا عَبْدُ اللَّهِ بْنُ رَجَاءٍ ، عَنْ هِشَامٍ ، عَنْ الْحَسَنِ ، قَالَ : كَانُوا يَقُولُونَ :" مَوْتُ الْعَالِمِ ثُلْمَةٌ فِي الْإِسْلَامِ، لَا يَسُدُّهَا شَيْءٌ مَا اخْتَلَفَ اللَّيْلُ وَالنَّهَارُ "

Bishr ibn al-Hakam told us, Abdullah ibn Raja’ told us, on the authority of Hisham, on the authority of al-Hasan, he said: They used to say: “The death of a scholar is a notch in the Islam, nothing can block it as long as night and day differ.”