Surah Al-Anbya 21:68

قَالُوا۟ حَرِّقُوهُ وَٱنصُرُوٓا۟ ءَالِهَتَكُمْ إِن كُنتُمْ فَـٰعِلِينَ

They said, "Burn him and support your gods - if you are to act."

Translation: Saheeh International

Tafsir

They said ‘Burn him that is burn Abraham and stand by your gods by having him burnt if you are to do anything’ in the way of standing by them. Thus they gathered lots of firewood and lit a fire throughout it. They then tied up Abraham placed him in a ballista and had him hurled into the fire. God exalted be He says

Excerpt from Tafsir al-Jalalayn, commentary on 21:68, via Quran.com. The reader has the full commentary and 9 more tafsirs.