Tafsir of Ta-Ha 20:93

أﻻ تتبعن

What prevented you when you saw them going astray; that you followed me not! meaning, "You should have informed me of this matter as soon as it happened.''

أفعصيت أمري

Have you then disobeyed my order! "In that which I entrusted to you,'' referring to Musa's statement,

اخلفنى فى قومى وأصلح وﻻ تتبع سبيل المفسدين

Replace me among my people, act in the right way and follow not the way of the mischief-makers. (7:142)