وَلَوْلَآ أَن تُصِيبَهُم مُّصِيبَةٌۢ بِمَا قَدَّمَتْ أَيْدِيهِمْ فَيَقُولُوا۟ رَبَّنَا لَوْلَآ أَرْسَلْتَ إِلَيْنَا رَسُولًا فَنَتَّبِعَ ءَايَـٰتِكَ وَنَكُونَ مِنَ ٱلْمُؤْمِنِينَ
Walawl a an tu s eebahum mu s eebatun bim a qaddamat aydeehim fayaqooloo rabban a lawl a arsalta ilayn a rasoolan fanattabiAAa a y a tika wanakoona mina almumineen a and [We have sent thee] lest they say [on Judgment Day], when disaster befalls them as an outcome of what their own hands have wrought, "O our Sustainer, if only Thou hadst sent an apostle unto us, we would have followed Thy messages, and would have been among those who believe!"
 - Mohammad Asad
so that they may not be able to say, when a disaster befalls them on account of their misdeeds: "Our Rabb, had You sent us a Rasool, we should have followed Your revelations and became the believers."
 - Muhammad Farooq-i-Azam Malik
Also so they would not say, if struck by an affliction for what their hands have done: 'Our Lord! If only You had sent us a messenger, we would have followed Your revelations and become believers.'
 - Mustafa Khattab
Otherwise, if disaster should afflict them because of that which their own hands have sent before (them), they might say: Our Lord! Why sentest Thou no messenger unto us, that we might have followed Thy revelations and been of the believers?
 - Marmaduke Pickthall
If (We had) not (sent thee to the Quraish) in case a calamity should seize them for (the deeds) that their hands have sent forth they might say: "Our Lord! why didst Thou not send us an apostle? We should then have followed the Signs and been amongst those who believe!" 3380
 - Abdullah Yusuf Ali