Ibn 'Umar (May Allah be pleased with them) reported:
The Prophet (ﷺ) said, "Hasten to perform the Witr prayer before dawn."[Abu Dawud and At-Tirmidhi]. (RU)
App reference (RU): Book 9, Hadith 147 (RU)
Arabic/English book reference (RU): Book 9, Hadith 1137 (RU)