Tafseer Ibn Kathir of QAAF [38]

وَلَقَدْ خَلَقْنَا السَّمَاوَاتِ وَالْأَرْضَ وَمَا بَيْنَهُمَا فِي سِتَّةِ أَيَّامٍ وَمَا مَسَّنَا مِن لُّغُوبٍ

And We did certainly create the heavens and earth and what is between them in six days, and there touched Us no weariness.