Surah Yusuf 12:80

فَلَمَّا ٱسْتَيْـَٔسُوا۟ مِنْهُ خَلَصُوا۟ نَجِيًّا ۖ قَالَ كَبِيرُهُمْ أَلَمْ تَعْلَمُوٓا۟ أَنَّ أَبَاكُمْ قَدْ أَخَذَ عَلَيْكُم مَّوْثِقًا مِّنَ ٱللَّهِ وَمِن قَبْلُ مَا فَرَّطتُمْ فِى يُوسُفَ ۖ فَلَنْ أَبْرَحَ ٱلْأَرْضَ حَتَّىٰ يَأْذَنَ لِىٓ أَبِىٓ أَوْ يَحْكُمَ ٱللَّهُ لِى ۖ وَهُوَ خَيْرُ ٱلْحَـٰكِمِينَ

So when they had despaired of him, they secluded themselves in private consultation. The eldest of them said, "Do you not know that your father has taken upon you an oath by Allāh and [that] before you failed in [your duty to] Joseph? So I will never leave [this] land until my father permits me or Allāh decides for me, and He is the best of judges.

Translation: Saheeh International

Tafsir

So when they despaired of moving him they withdrew to confer privately together najiyyan is a verbal noun that can be used to refer to one person or more in other words understand it as meaning yunājī ba‘duhum ba‘dan ‘one conferring with the other’. …

Excerpt from Tafsir al-Jalalayn, commentary on 12:80, via Quran.com. The reader has the full commentary and 9 more tafsirs.