Not graded
Sunan ad-Darimi 189
أَخْبَرَنَا أَبُو الْمُغِيرَةِ حَدَّثَنَا الْأَوْزَاعِيُّ قَالَ أُنْبِئْتُ أَنَّهُ كَانَ يُقَالُ وَيْلٌ لِلْمُتَفَقِّهِينَ لِغَيْرِ الْعِبَادَةِ وَالْمُسْتَحِلِّينَ لِلْحُرُمَاتِ بِالشُّبُهَاتِ
This hadith has no English translation yet: the Arabic text, the reference and the grade are shown here.
Reported by Ad-Darimi (No. 189).