Al-Isra 17:78

أَقِمِ ٱلصَّلَوٰةَ لِدُلُوكِ ٱلشَّمۡسِ إِلَىٰ غَسَقِ ٱلَّيۡلِ وَقُرۡءَانَ ٱلۡفَجۡرِۖ إِنَّ قُرۡءَانَ ٱلۡفَجۡرِ كَانَ مَشۡهُودٗا 78

Establish prayer at the decline of the sun [from its meridian] until the darkness of the night and [also] the Qur'an of dawn. Indeed, the recitation of dawn is ever witnessed