Al-Hasan reported: Ibn Mas’ud, may Allah be pleased with him, said, “The death of a scholar is a loss that cannot be replaced for as long as the day and night revolve.”
Source: Shu’ab al-Imān lil-Bayhaqī 1590
عَنِ الْحَسَنِ قَالَ قَالَ ابْنُ مَسْعُودٍ رَضِيَ اللَّهُ عَنْهُ مَوْتُ الْعَالِمِ ثُلْمَةٌ لَا يَسُدُّهَا شَيْءٌ مَا اخْتَلَفَ اللَّيْلُ وَالنَّهَارُ
1590 شعب الإيمان للبيهقي طلب العلم فصل في فضل العلم وشرف مقداره
