Very weak
graded by Al-Albani
Mishkat al-Masabih 268
Narrator:Abu ad-Dardā’
وَعَنْ أَبِي الدَّرْدَاءِ قَالَ:
" إِنَّ مِنْ أَشَرِّ النَّاسِ عِنْدَ اللَّهِ مَنْزِلَةً يَوْمَ الْقِيَامَةِ: عَالِمٌ لَا ينْتَفع بِعِلْمِهِ "
Abu Darda’ said that the one who would have the worst position in God’s sight on the day of resurrection would be a learned man who did not profit from his learning.” Darimi transmitted it.
Cited in Mishkat al-Masabih (No. 268).