The Messenger of Allah ﷺ said, "If people only knew the reward of the night prayer and the dawn prayer, they would come to them even if they had to crawl."
حدثنا حسن حدثنا شيبان عن يحيى عن محمد بن إبراهيم عن يحنس أن
أن رسول الله ﷺ قال لو أن الناس يعلمون ما في صلاة العتمة وصلاة الصبح لأتوهما ولو حبوا
Its isnad is sahih, and its narrators are trustworthy and well-known. Yuhanis is the son of Abu Musa. He is a well-known trustworthy narrator whose hadith appears in Muslim and in the Sunan collections. The hadith has already appeared in similar form at 21171 and 21163.