Surah Al-A'raf 7:155

وَٱخْتَارَ مُوسَىٰ قَوْمَهُۥ سَبْعِينَ رَجُلًا لِّمِيقَـٰتِنَا ۖ فَلَمَّآ أَخَذَتْهُمُ ٱلرَّجْفَةُ قَالَ رَبِّ لَوْ شِئْتَ أَهْلَكْتَهُم مِّن قَبْلُ وَإِيَّـٰىَ ۖ أَتُهْلِكُنَا بِمَا فَعَلَ ٱلسُّفَهَآءُ مِنَّآ ۖ إِنْ هِىَ إِلَّا فِتْنَتُكَ تُضِلُّ بِهَا مَن تَشَآءُ وَتَهْدِى مَن تَشَآءُ ۖ أَنتَ وَلِيُّنَا فَٱغْفِرْ لَنَا وَٱرْحَمْنَا ۖ وَأَنتَ خَيْرُ ٱلْغَـٰفِرِينَ

And Moses chose from his people seventy men for Our appointment. And when the earthquake seized them, he said, "My Lord, if You had willed, You could have destroyed them before and me [as well]. Would You destroy us for what the foolish among us have done? This is not but Your trial by which You send astray whom You will and guide whom You will. You are our Protector, so forgive us and have mercy upon us; and You are the best of forgivers.

Translation: Saheeh International

Tafsir

And Moses chose of his people seventy men from among those who had not worshipped the calf by God’s command for Our appointed time that is for the time at which We promised him that they should come and apologise for their comrades’ worship of the calf. He Moses then departed with them; …

Excerpt from Tafsir al-Jalalayn, commentary on 7:155, via Quran.com. The reader has the full commentary and 9 more tafsirs.