Surah Taha 20:86
فَرَجَعَ مُوسَىٰٓ إِلَىٰ قَوْمِهِۦ غَضْبَـٰنَ أَسِفًا ۚ قَالَ يَـٰقَوْمِ أَلَمْ يَعِدْكُمْ رَبُّكُمْ وَعْدًا حَسَنًا ۚ أَفَطَالَ عَلَيْكُمُ ٱلْعَهْدُ أَمْ أَرَدتُّمْ أَن يَحِلَّ عَلَيْكُمْ غَضَبٌ مِّن رَّبِّكُمْ فَأَخْلَفْتُم مَّوْعِدِى
So Moses returned to his people, angry and grieved. He said, "O my people, did your Lord not make you a good promise? Then, was the time [of its fulfillment] too long for you, or did you wish that wrath from your Lord descend upon you, so you broke your promise [of obedience] to me?"
Translation: Saheeh International
Tafsir
Thereupon Moses returned to his people angry with them and sad extremely grieved. He said ‘O my people did not your Lord promise you a fair promise? that is a true promise that He will give you the Torah? Did the period the length of my absence from you seem too long for you or did you desire that wrath should become …
Excerpt from Tafsir al-Jalalayn, commentary on 20:86, via Quran.com. The reader has the full commentary and 9 more tafsirs.