Taha 20:90

Walaqad qala lahum haroonu minqablu ya qawmi innama futintum bihi wa-innarabbakumu arrahmanu fattabiAAooneewaateeAAoo amree

And Aaron had already told them before [the return of Moses], "O my people, you are only being tested by it, and indeed, your Lord is the Most Merciful, so follow me and obey my order."

Hārūn had already said to them, “O my people, you have only been led astray with it, and your Lord is the RaHmān (All-Merciful). So follow me and obey my command.”