Narrated Rafi' bin Khadij (RA):

Allah's Messenger (ﷺ) said: "Offer the morning prayer at dawn, for it is greater for your rewards." [Reported by al-Khamsah. at-Tirmidhi and Ibn Hibban graded it Sahih (authentic)].

وَعَنْ رَافِعِ بْنِ خَدِيجٍ ‏- رضى الله عنه ‏- قَالَ: قَالَ رَسُولُ اَللَّهِ ‏- صلى الله عليه وسلم ‏-{ أَصْبِحُوا بِالصُّبْحِ فَإِنَّهُ أَعْظَمُ لِأُجُورِكُمْ } رَوَاهُ اَلْخَمْسَةُ, وَصَحَّحَهُ اَلتِّرْمِذِيُّ, وَابْنُ حِبَّانَ [1]‏ .‏