Hadith 2:69
Ibn Sirin said, “This knowledge is a religion, so consider from whom you receive your religion.” Muslim transmitted it.
وَعَنِ ابْنِ سِيرِينَ قَالَ: إِنَّ هَذَا الْعِلْمَ دِينٌ فَانْظُرُوا عَمَّنْ تَأْخُذُونَ دِينَكُمْ. رَوَاهُ مُسْلِمٌ
Original Reference: Mishkat al-Masabih 273