Abul-Haiyaj Haiyan bin Husain said:
'Ali bin Abu Talib (May Allah be pleased with him) said to me: "Shall I not send you to do a task that the Messenger of Allah (ﷺ) had assigned to me? Spare no portrait unwiped out, and leave not a high grave unlevelled."[Muslim]. (PT)
App reference (PT): Book 18, Hadith 177 (PT)
Arabic/English book reference (PT): Book 18, Hadith 1687 (PT)