Mishkat al-Masabih 2 Knowledge كتاب العلم 69

وَعَنِ ابْنِ سِيرِينَ قَالَ: إِنَّ هَذَا الْعِلْمَ دِينٌ فَانْظُرُوا عَمَّنْ تَأْخُذُونَ دِينَكُمْ. رَوَاهُ مُسْلِمٌ

Ibn Sirin said, “This knowledge is a religion, so consider from whom you receive your religion.” Muslim transmitted it.