Surah Ad-Dukhan, ayah 36

فَأۡتُواْ بِـَٔابَآئِنَآ إِن كُنتُمۡ صَٰدِقِينَ ٣٦

Fa tū bi'ābā'inā in kuntum sādiqīn

Then bring [back] our forefathers, if you should be truthful."