(Moses) said, “O Aaron! Why did you not prevent them when you saw they had gone astray?”
Sayyed Abbas Sadr-Ameli
(Moses) said: 'O Aaron! What hindered you when you saw them going astray
Al-muntakhab fi tafsir al-Qur'an al-Karim
And when Mussa returned, he said to Harun: "What kept you Harun from acting when you saw them deviated in mind and wandering from the path of righteousness!"