Weak
graded by Al-Albani
Mishkat al-Masabih 267
وَعَن الْأَحْوَص بن حَكِيم عَنْ أَبِيهِ قَالَ: سَأَلَ رَجُلٌ النَّبِيَّ صَلَّى الله عَلَيْهِ سلم عَنِ الشَّرِّ فَقَالَ: «لَا تَسْأَلُونِي عَنِ الشَّرِّ وَسَلُونِي عَنِ الْخَيْرِ» يَقُولُهَا ثَلَاثًا ثُمَّ قَالَ: «أَلَا إِنَّ شَرَّ الشَّرِّ شِرَارُ الْعُلَمَاءِ وَإِنَّ خير الْخَيْر خِيَار الْعلمَاء» . رَوَاهُ الدَّارمِيّ
Al-Ahwas b. Hakim told on his father’s authority that a man asked the Prophet about evil, and he replied, "Do not ask me about evil, but ask me about good,” saying it three times. Then he said, "The worst evil consists in learned men who are evil, and the best good consists in learned men who are good.” Darimi transmitted it.
Reported by Ad-Darimi (No. 372). Cited in Mishkat al-Masabih (No. 267).