Al-Ma'idah · 5:42

42. These Jews frequently listen to lies and consume unlawful wealth, such as usury. If they bring a case before you for judgement, O Messenger, then pass judgement between them if you wish, or leave off passing judgement if you so wish – you have the option of doing either of these. If you choose not to pass judgement, they will not be able to harm you in any way. If you do pass judgement, then do so with justice, even though they themselves are unfair and are your enemies. Allah loves those who are just in their judgements, even though the case is between those who are the judge’s enemies.