Then bring [back] our forefathers, if you should be truthful." (44:36)

Almuntakhab Fi Tafsir Alquran Alkarim

And they add, if you Muhammad together with those who have fallen into line truly assert an Eternal Providence and justify the truth of Resurrections then bring back our forefathers

Tafseer Tafheem-ul-Quran by Syed Abu-al-A'la Maududi

(44:36) Bring back to us our fathers if you are truthful.' *31

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

*31) This was their reasoning: We have never seen a dead person resurrected to life. Therefore, we believe that there will be no other life after death. If you claim that there will be another life, then resurrect our forefathers from their graves, so that we are convinced of the life-after-death. If you do not do this, we would think that your claim is false. This was, as they thought, a very strong argument for the refutation of life-after-death, whereas it was absurd. Nobody had told them that the dead would return to this very world after being raised back to life, nor the Holy Prophet, nor any Muslim, had ever claimed that he could raise the dead back to life.
 

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

اگر تم سچے ہو تو اٹھا لاؤ ہمارے باپ دادا کو"