Mishkat al-Masabih 2 Knowledge كتاب العلم 32

وَعَنْ جُنْدُبٍ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «مَنْ قَالَ فِي الْقُرْآنِ بِرَأْيِهِ فَأَصَابَ فقد أَخطَأ» . رَوَاهُ التِّرْمِذِيّ وَأَبُو دَاوُد

Jundub reported God’s messenger as saying, “ If anyone interprets the Qur’an in the light of his own opinion and is right, he has erred.” Tirmidhi transmitted it.