Sunan Abi Dawud Book 2, Hadith 164
The Messenger of Allah (ﷺ) led us in the dawn prayer one day. And he said: Is so and so present? They said: No. He (again) asked: Is so and so present? They replied: No. He then said: These two prayers are the ones which are most burdensome to hypocrites. If you knew what they contain (i.e. blessings), you would come to them, even though you had to crawl on your knees. The first row is like that of the angels, and if you knew the nature of its excellence, you would race to join it.
A man's prayer said along with another is purer than his prayer said alone, and his prayer with two men is purer than his prayer with one, but if there are more it is more pleasing to Allah, the Almighty, the Majestic.
Messenger of Allah, there are many venomous creatures and wild beasts in Medina (so allow me to pray in my house because I am blind). The Prophet (ﷺ) said: Do you hear the call, "Come to prayer," "Come to salvation"? (He said: Yes.) Then you must come.
Abu Dawud said: Al-Qasim al-Jarmi has narrated this tradition from Sufyan in a similar manner. But his version does not contain the words "Then you must come."
‘Uthman b. ‘Affan reported the Messenger of Allah (may peace be him) as saying; if anyone says the night prayer in congregation, he is like one who keeps vigil (in prayer) till midnight; and he who says both the night and dawn prayer in congregation is like one who keeps vigil (in prayer) the whole night.