The tree of Zaqqum ... springeth in the heart of hell. Its crop is as it were the heads of devils. ... They verily must eat thereof, and fill (their) bellies therewith. 37:62
"Shall we forsake our gods for a mad poet?"
Muhammad's critics thought he was "a mad poet." 37:36
Those in hell must eat from a tree with the heads of devils, and then drink boiling water.
After that they return to hell. 37:62-68
When Abraham's son, Ishmael, was old enough to walk, Allah told Abraham in a dream to sacrifice Ishmael. So Abraham asked Ishmael if it'd be OK with him, and Ishmael said, "Sure thing, Dad,
go ahead and kill me for God. I won't even flinch." 37:102