It is narrated from Hazrat Abu Huraira (may Allah be pleased with him) that the Holy Prophet (peace and blessings of Allah be upon him) said: If any of you were certain that he would receive a thick, fat bone or two fine hoofs, they would all surely come for it; and if they knew what (reward) there is in these two, that is, the Isha and Fajr prayers, they would surely come to them even if they had to crawl. My heart desires that I order a man to lead the prayer, then I go to those people who do not participate in the congregational prayer and set fire to their houses.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 10217