The people of my household taught me some surahs of the Qur'an, the sunan, and the adhkar, but I forget them. Do I incur sin? Please advise us, may you be rewarded.

Question:
May Allah reward you with good and do you well. You say that you do not know of the surahs of the Qur'an except eleven, and that the learned people of your household taught you some surahs of the Qur'an, the sunan, and sayings recited in prayer and elsewhere, but you forget them, not intentionally, but due to a natural forgetfulness that accompanies you. What should you do? Do you incur sin? Please advise us, may you be rewarded, may Allah reward you with good.

Answer:
This is a good thing, that these people are teaching you the Qur'an, the supplications, the adhkar, and some of the Prophetic hadiths. This is a good deed. I wish that students of knowledge would do this with their families, with their children, and with their Muslim brothers.
As for the issue of forgetfulness, it is addressed by frequent repetition: repeating the surahs of the Qur'an, increasing their recitation, repeating them, and reciting them again. For the Qur'an, without doubt, requires care, and it slips away from its owner like tethered camels: if you attend to them, they stay, otherwise they slip away. So adorn yourself with frequent recitation of the surah you have memorized, and with reading and reviewing the hadiths you have memorized and the adhkar. You certainly need the adhkar daily, so you recite them, and in this way they become firm. Knowledge is only established through practice. Yes. Knowledge is only established for practice. Yes.