It was narrated from Abu Dharr that he heard the Messenger of Allah (ﷺ) say:
“Whoever claims something that does not belong to him; he is not one of us, so let him take his place in Hell.”
It was narrated from Ibn 'Umar that the Messenger of Allah (ﷺ) said:
“Whoever takes the wrongdoer's side in a dispute or supports wrongdoing, he will remain subject to the wrath of Allah until he gives it up.”