[Moses] said, "The knowledge thereof is with my Lord in a record. (20:52)

Almuntakhab Fi Tafsir Alquran Alkarim

Only Allah knows what happened to them, they said knowledge of the hidden is an attribute of Him, Our Creator, Who puts everything on record. and never goes wrong nor does He forget

Tafseer Tafheem-ul-Quran by Syed Abu-al-A'la Maududi

(20:52) Moses replied, "The knowledge of that is with my Lord, secure in a writing; my Lord neither errs nor forgets. " *25

[Moses] said, "The knowledge thereof is with my Lord in a record. meaning

*25) This answer is full of wisdom. If Prophet Moses had said, "Yes, they all lacked common sense and had gone astray and would become the fuel of Hell", this answer, though true, would have served the very purpose Pharaoh had in mind in putting the question. But the answer given by the Prophet was true and it frustrated the trick of Pharaoh as well. His answer was to this effect: "Well, those people have now gone before their Lord, and I have no means of judging their deeds and intentions. However, their whole record is safe and secure with Allah, and nothing can escape Him. Allah alone knows how to deal with them. What concerns you and me is our own position and attitude to life. We should be more concerned about our own end than of those who have already passed away into Allah's presence."
 

[Moses] said, "The knowledge thereof is with my Lord in a record. meaning in Urdu

موسیٰؑ نے کہا "اُس کا علم میرے رب کے پاس ایک نوشتے میں محفوظ ہے میرا رب نہ چُوکتا ہے نہ بھُولتا ہے"