Surah Az-Zukhruf 43:87
وَلَئِن سَأَلْتَهُم مَّنْ خَلَقَهُمْ لَيَقُولُنَّ ٱللَّهُ ۖ فَأَنَّىٰ يُؤْفَكُونَ
And if you asked them who created them, they would surely say, "Allāh." So how are they deluded?
Translation: Saheeh International
Tafsir
And if wa-la-in the lām is for oaths you ask them who created them they will surely say ‘God’ la-yaqūlunna the indicative nūn and the plural person indicator wāw have been omitted. How can they then deviate? how can they be turned away from worshipping God?
Excerpt from Tafsir al-Jalalayn, commentary on 43:87, via Quran.com. The reader has the full commentary and 9 more tafsirs.