(Al-Ahraf) 7 : 134
وَلَمَّا وَقَعَ عَلَيْهِمُ الرِّجْزُ قَالُوا يَا مُوسَى ادْعُ لَنَا رَبَّكَ بِمَا عَهِدَ عِنْدَكَ ۖ لَئِنْ كَشَفْتَ عَنَّا الرِّجْزَ لَنُؤْمِنَنَّ لَكَ وَلَنُرْسِلَنَّ مَعَكَ بَنِي إِسْرَائِيلَ
And whenever distress happened upon them they said: "Oh Moses! You appeal to your Lord for us with the covenant you have; if you are removing the distress from us, surely we will believe in you, and surely we will send the children of Israel with you".