Mukhtasar Bukhari

Narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings of Allah be upon him) said: "If people knew what (reward) is in the call to prayer and in the first row, and they could not get it except by drawing lots, they would certainly draw lots. And if they knew what (reward) is in offering the Zuhr prayer at its earliest time, they would surely hasten to it. And if they knew what (reward) is in the Isha and Fajr prayers (offered in congregation), they would certainly come to them even if they had to crawl."