ALI 'IMRAN — Ayat 66

هَاأَنتُمْ هَؤُلاء حَاجَجْتُمْ فِيمَا لَكُم بِهِ عِلمٌ فَلِمَ تُحَآجُّونَ فِيمَا لَيْسَ لَكُم بِهِ عِلْمٌ وَاللّهُ يَعْلَمُ وَأَنتُمْ لاَ تَعْلَمُونَ

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 Allah knows, while you know not.