Musnad Ahmad 25:375

'Ali ibn 'Asim narrated to us, Khalid informed us, from 'Ikrimah, from Ibn 'Abbas, who said: The Messenger of Allah (may Allah bless him and grant him peace) said: "Whoever listens to the speech of a people while they dislike it for him, molten lead will be poured into his ears. And whoever claims to have seen a dream [that he did not see] will be punished until he ties a knot in a barley grain, and he will not be able to tie it. And whoever makes an image will be tasked to blow into it, and he will not be able to blow."