'Aishah (May Allah be pleased with her) reported:
The Prophet (ﷺ) said, "The two Rak'ah before the dawn (Fajr) prayer are better than this world and all it contains."[Muslim]Another narration goes: "The two Rak'ah before the dawn (Fajr) prayer are dearer to me than the whole world." (JA)
App reference (JA): Book 9, Hadith 112 (JA)
Arabic/English book reference (JA): Book 9, Hadith 1102 (JA)