Surah Yusuf 12:79

قَالَ مَعَاذَ ٱللَّهِ أَن نَّأْخُذَ إِلَّا مَن وَجَدْنَا مَتَـٰعَنَا عِندَهُۥٓ إِنَّآ إِذًا لَّظَـٰلِمُونَ

He said, "[I seek] the refuge of Allāh [to prevent] that we take except him with whom we found our possession. Indeed, we would then be unjust."

Translation: Saheeh International

Tafsir

He said ‘God forbid ma‘ādha’Llāhi lit. ‘refuge is with God’ is in the accusative because it is a verbal noun the verb having been omitted and placed in a genitive annexation with its direct object in other words understand it as na‘ūdhu bi’Llāhi ‘we seek refuge with God’ that we should take anyone save him with whom …

Excerpt from Tafsir al-Jalalayn, commentary on 12:79, via Quran.com. The reader has the full commentary and 9 more tafsirs.