وَإِذَا تُتْلَىٰ عَلَيْهِمْ ءَايَـٰتُنَا بَيِّنَـٰتٍ مَّا كَانَ حُجَّتَهُمْ إِلَّآ أَن قَالُوا ٱئْتُوا بِـَٔابَآئِنَآ إِن كُنتُمْ صَـٰدِقِينَ

Wa-itha tutla AAalayhim ayatunabayyinatin ma kana hujjatahum illaan qaloo i/too bi-aba-ina in kuntum sadiqeen

And when Our verses are recited to them as clear evidences, their argument is only that they say, "Bring [back] our forefathers, if you should be truthful."