Prayer and the rulings that leave it

The book of prayer and the rulings that leave it or the ruling on one who neglects the prayer. He is one of the works of Ibn Qayyim Al -Jawzia, who died in 751 AH. Where his author separated his issues, he mentioned the opinions on the one who trades the prayer intentionally, is it necessary to be killed or not? The daytime prayer is accepted at night and the night prayer during the day or not? And its prostration, and the amount of prayer of the Messenger of God ﷺ? And the truth of the mitigation that the Messenger of God alerted him ﷺ? Finally, how was the prayer of the Messenger of God ﷺ?