ENOfficial
Abul Hayyaj al-Asadi told that ‘Ali said to him, “I am sending you on the same mission as God’s messenger sent me. Do not leave an image without obliterating it, or a high grave without levelling it.” Muslim transmitted it.
Source: sunnah.com
Other translations
Arabic
وَعَنْ أَبِي الْهَيَّاجِ الْأَسَدِيِّ قَالَ: قَالَ لِي عَلِيٌّ: أَلَا أَبْعَثُكَ عَلَى مَا بَعَثَنِي عَلَيْهِ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: إِن لَا تَدَعَ تِمْثَالًا إِلَّا طَمَسْتَهُ وَلَا قَبْرًا مشرفا إِلَّا سويته. رَوَاهُ مُسلم
sunnah.com