The Prophet ﷺ heard a man reciting a verse and said, "May Allah have mercy on him. He has reminded me of a verse I had forgotten."
حدثنا وكيع حدثنا هشام عن أبيه
سمع النبي ﷺ رجلا يقرأ آية فقال رحمه الله لقد أذكرني آية كنت نسيتها
Its isnad is sahih. Bukhari narrated it, 9/84 no. 5038, in the virtues of the Quran, Muslim, 1/543 no. 788, in the travelers, and Abu Dawud, 2/38 no. 1331, in the prayer.