When it is Friday, the angels stand at every door of the mosque and record the people in the order of their arrival, and when the Imam sits (on the pulpit for delivering the sermon) they fold up their sheets (manuscripts of the Qur'an) and listen to the mention (of Allah). And he who comes early is like one who offers a she-camel as a sacrifice, the next like one who offers a cow, the next a ram, the next a hen, the next an egg. (Using translation from Muslim 850b)   

قَالَ رَسُولُ اللهِ ﷺ إِذَا كَانَ يَوْمُ الْجُمُعَةِ كَانَ عَلَى كُلِّ بَابٍ مِنْ أَبْوَابِ الْمَسْجِدِ مَلَائِكَةٌ يَكْتُبُونَ الْأَوَّلَ فَالْأَوَّلَ فَإِذَا جَلَسَ الْإِمَامُ طَوَوِا الصُّحُفَ وَجَاءُوا يَسْتَمِعُونَ الذِّكْرَ فَمَثَلُ الْمُهَجِّرِ كَالَّذِي يُهْدِي بَدَنَةً ثُمَّ كَالَّذِي يُهْدِي بَقَرَةً ثُمَّ كَالَّذِي يُهْدِي الْكَبْشَ ثُمَّ كَالَّذِي يُهْدِي الدَّجَاجَةَ ثُمَّ كَالَّذِي يُهْدِي الْبَيْضَةَ