Why did Musa عَلَيْهِ ٱلسَّلَامُ banish Samiri but only scold Harun عَلَيْهِ ٱلسَّلَامُ?

Why did Musa عَلَيْهِ ٱلسَّلَامُ banish Samiri but only scold Harun عَلَيْهِ ٱلسَّلَامُ? > قَالَ يَـٰهَـٰرُونُ مَا مَنَعَكَ إِذْ رَأَيْتَهُمْ ضَلُّوٓا۟ ٩٢ > > Moses scolded ˹his brother˺, “O Aaron! What prevented you, when you saw them going astray, > > أَلَّا تَتَّبِعَنِ ۖ أَفَعَصَيْتَ أَمْرِى ٩٣ > > from following after me? How could you disobey my orders?” > > قَالَ يَبْنَؤُمَّ لَا تَأْخُذْ بِلِحْيَتِى وَلَا بِرَأْسِىٓ ۖ إِنِّى خَشِيتُ أَن تَقُولَ فَرَّقْتَ بَيْنَ بَنِىٓ إِسْرَٰٓءِيلَ وَلَمْ تَرْقُبْ قَوْلِى ٩٤ > > Aaron pleaded, “O son of my mother! Do not seize me by my beard or ˹the hair of˺ my head. I really feared that you would say, ‘You have caused division among the Children of Israel, and did not observe my word.’” > قَالَ فَمَا خَطْبُكَ يَـٰسَـٰمِرِىُّ ٩٥ > > Moses then asked, “What did you think you were doing, O Sâmiri?” > قَالَ فَٱذْهَبْ فَإِنَّ لَكَ فِى ٱلْحَيَوٰةِ أَن تَقُولَ لَا مِسَاسَ ۖ وَإِنَّ لَكَ مَوْعِدًۭا لَّن تُخْلَفَهُۥ ۖ وَٱنظُرْ إِلَىٰٓ إِلَـٰهِكَ ٱلَّذِى ظَلْتَ عَلَيْهِ عَاكِفًۭا ۖ لَّنُحَرِّقَنَّهُۥ ثُمَّ لَنَنسِفَنَّهُۥ فِى ٱلْيَمِّ نَسْفًا ٩٧ > >Moses said, “Go away then! And for ˹the rest of your˺ life you will surely be crying, ‘Do not touch ˹me˺!’1 Then you will certainly have a fate2 that you cannot escape. Now look at your god to which you have been devoted: we will burn it up, then scatter it in the sea completely.” Taha