Ali 'Imran 3:66

Ha antum haola-i hajajtumfeema lakum bihi AAilmun falima tuhajjoona feemalaysa lakum bihi AAilmun wallahu yaAAlamu waantumla taAAlamoon

Here you are - those who have argued about that of which you have [some] knowledge, but why do you argue about that of which you have no knowledge? And Allāh knows, while you know not.

Look, this is what you are - you have already argued about matters concerning which you have knowledge; why then do you argue about matters of which you have no knowledge? Allah knows and you do not know.