(An-Nazi'ath) 79 : 16
إِذْ نَادَاهُ رَبُّهُ بِالْوَادِ الْمُقَدَّسِ طُوًى
When his Lord called him from the valley of “Thwuva.”
When Moses was returning from “Madyan” with his family to Egypt, Allah called him from the valley “Thwuva” to assign His mission. See explanation 20: 12 and 28: 29-32.