The Shaykh’s (may Allah preserve him) opinion on writing marginal notes on tafsir books

Question:
May Allah keep you safe, Your Eminence, father. The questioner, a student of knowledge, asks: Is it permissible for him to write marginal notes on tafsir, even though he does not write anything on the verses?

Answer:
Even though he does not write anything on the verses. No, he does not write unless he is a scholar. If he is a scholar and wants to add knowledge that is not in the tafsir, not in the book, and he is a scholar, there is no harm in him writing marginal notes. But the student does not write anything. With this writing, he corrupts the tafsir, he corrupts the book, and he dirties the pages. This is not appropriate. If he wants to write things down, he should record them. He should have a notebook, he should have a notebook and papers to record in what he understood. Is his understanding correct or not? It should be on these papers, not in the tafsir. Yes.