وَلَوْwalawAnd ifتَقَوَّلَtaqawwalahe (had) fabricatedعَلَيْنَاʿalaynāagainst Usبَعْضَbaʿḍasomeالْاَقَاو۪يلِۙl-aqāwīlisayingsHad he attributed anything falsely to Us.