أَقِمِ الصَّلاةَ لِدُلوكِ الشَّمسِ إِلىٰ غَسَقِ اللَّيلِ وَقُرآنَ الفَجرِ ۖ إِنَّ قُرآنَ الفَجرِ كانَ مَشهودًا

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.