وَلَوْ يَعْلَمُونَ مَا فِي التَّهْجِيرِ لَاسْتَبَقُوا إِلَيْهِ، وَلَوْ يَعْلَمُونَ مَا فِي الْعَتَمَةِ وَالصُّبْحِ لَأَتَوْهُمَا وَلَوْ حَبْوًا".
صحیح بخاری · Hadith 654
If the people knew the reward for pronouncing the Adhan and for standing in the first row (in the congregational prayer) and found no other way to get it except by drawing lots they would do so, and if they knew the reward of offering the Zuhr prayer early (in its stated time), they would race for it and if they knew the reward for `Isha' and Fajr prayers in congregation, they would attend them even if they were to crawl.