Surah An-Naml 27:84

حَتَّىٰٓ إِذَا جَآءُو قَالَ أَكَذَّبْتُم بِـَٔايَـٰتِى وَلَمْ تُحِيطُوا۟ بِهَا عِلْمًا أَمَّاذَا كُنتُمْ تَعْمَلُونَ

Until, when they arrive [at the place of Judgement], He will say, "Did you deny My signs while you encompassed them not in knowledge, or what [was it that] you were doing?"

Translation: Saheeh International

Tafsir

until when they arrive at the site of the Reckoning He exalted be He shall say to them ‘Did you deny My prophets by denying My signs without comprehending them from the perspective of your denial in knowledge or what ammā the interrogative mā has been assimilated with am ‘or’ was it dhā is a relative pronoun in other …

Excerpt from Tafsir al-Jalalayn, commentary on 27:84, via Quran.com. The reader has the full commentary and 9 more tafsirs.