"The Messenger of Allah said: 'One Faqih (knowledgeable man) is more formidable against the Shaitan than one thousand devoted worshippers.'" (Using translation from Ibn Mājah 222)
قَالَ رَسُولُ اللهِ ﷺ «فَقِيهٌ وَاحِدٌ أَشَدُّ عَلَى الشَّيْطَانِ مِنْ أَلْفِ عَابِدٍ»