Forgetting what one learns: does it indicate a lack of sincerity?

Question:
Peace be upon you, Your Eminence, father. The questioner asks: How do I be sincere in seeking knowledge? And if I memorize a text and then forget it, does that indicate a lack of sincerity?

Answer:
No, that indicates negligence. A person may be sincere in seeking knowledge, then become preoccupied and forget; this indicates negligence. As for how to be sincere in seeking knowledge, that is up to you. Make your intention and purpose for seeking knowledge the best, seek help from Allah, and ask Him to grant you success in sincerity and the rectification of your intention. Yes.