إِنَّ الصَّلاةَ كَانَتْ عَلَى الْمُؤْمِنِينَ كِتَابًا مَوْقُوتًا
Indeed, performing prayer is a duty on the believers at its specified time.   (4:103)
The Prophet ﷺ said: The best deed is to perform prayer at its right time.  (Bukhari)