Request To Explain And Provide Context About A Hadith
First of all one must understand that the Messenger of God comes to establish Itmam-e-Hujjat after which Allah separates believers from those who reject the truth, then He rewards the believers and punishes the rest in this world. In case of Madinah, there were munafiq. This is why there was an emphasis on Muslims performing their duties to prove that they were loyal to Allah. As He intended to separate the munafiq from the true believers, then His judgment would follow. The hadith must understood in that context. Messenger (PBUH) was encouraging and highlighting to the Muslims in such choice of words that they should not be slacking in their duties at this crucial moment, they should rush to pray behind the Messenger of God in the mosque to whom they swore allegiance and oath to. See this hadith with similar style and context: https://sunnah.com/riyadussalihin:1073 For Muslims nowadays, there is no Messenger of God among them and no judgment of Allah to follow, this does not apply to them. It is recommended for men to pray at mosque. As for authenticity of hadith, wait for @UmerQureshi @Irfan76 reply.