وَلَولا إِذ سَمِعتُموهُ قُلتُم ما يَكونُ لَنا أَن نَتَكَلَّمَ بِهـٰذا سُبحانَكَ هـٰذا بُهتانٌ عَظيمٌ

And why, when you heard it, did you not say, "It is not for us to speak of this. Exalted are You, [O Allah]; this is a great slander"?