يَحْمِلُ هَذَا الْعِلْمَ مِنْ كُلِّ خَلَفٍ عُدُولُهُ، يَنْفُونَ عَنْهُ تَحْرِيفَ الْغَالِينَ، وَانْتِحَالَ الْمُبْطِلِينَ، وَتَأْوِيلَ الْجَاهِلِينَ
Translation: In each succeeding generation, trustworthy people will carry this knowledge, removing the distortion of extremists, the false claims of fabricators, and the misinterpretations of the uninformed.
Source: البيهقي في كتاب المدخل
يَحْمِلُ هَذَا الْعِلْمَ means “will carry/preserve this knowledge,” and مِنْ كُلِّ خَلَفٍ عُدُولُهُ refers to trustworthy people in successive generations. يَنْفُونَ عَنْهُ means “they remove from it.”
The central lesson is stewardship of religious knowledge. Preserving it means not only memorizing words but understanding meanings carefully, avoiding fabricated additions, and correcting misinterpretations.