Surah Qaf 50:15
أَفَعَيِينَا بِٱلْخَلْقِ ٱلْأَوَّلِ ۚ بَلْ هُمْ فِى لَبْسٍ مِّنْ خَلْقٍ جَدِيدٍ
Did We fail in the first creation? But they are in confusion over a new creation.
Translation: Saheeh International
Tafsir
Were We then wearied by the first creation? that is to say We were not wearied by it and likewise We will not be wearied by restoring it. Nay yet they are in doubt about a new creation which will be at the Resurrection.
Excerpt from Tafsir al-Jalalayn, commentary on 50:15, via Quran.com. The reader has the full commentary and 9 more tafsirs.