Imam Bukhari narrates: Abdullah bin Yusuf narrated to us, he said: Malik informed us from Sumayy, the freed slave of Abu Bakr, from Abu Salih from Abu Hurairah, may Allāh be pleased with him, he said that the Messenger of Allāh ﷺ said:
If the people knew how much reward there is in giving the Adhan and in the first row, then if they did not get the opportunity except by drawing lots, they would draw lots. And if they knew how much reward there is in praying at midday, they would certainly race towards it. And and if they knew how much reward there is in Isha and Fajr, they would certainly come to pray them even if they had to crawl.
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ يُوسُفَ، قَالَ أَخْبَرَنَا مَالِكٌ، عَنْ سُمَيٍّ مَوْلَى أَبِي بَكْرٍ، عَنْ أَبِي صَالِحٍ، عَنْ أَبِي هُرَيْرَةَ أَنَّ رَسُولَ اللَّهِ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ قَالَ
لَوْ يَعْلَمُ النَّاسُ مَا فِي النِّدَاءِ وَالصَّفِّ الأَوَّلِ، ثُمَّ لَمْ يَجِدُوا إِلَّا أَنْ يَسْتَهِمُوا عَلَيْهِ لاَسْتَهَمُوا، وَلَوْ يَعْلَمُونَ مَا فِي التَّهْجِيرِ لاَسْتَبَقُوا إِلَيْهِ، وَلَوْ يَعْلَمُونَ مَا فِي العَتَمَةِ وَالصُّبْحِ، لَأَتَوْهُمَا وَلَوْ حَبْوًا
Reference: Sahih Al Bukhari 615