1) During controlling virus covid19 , is there the verse ‘as-salatu fi buyutikum’  valid. Because i never know about this?

2) In my country all mosque been shutdown for 5 daily pray. Due to this reason only azan is allowed. Is it correct way because i see the mosque they shutdown without any option and straight away shutdown but for industry and some other place they come out with reason they still can operate. I dont understand what is going on.

1- It is mentioned in a narration in Bukhari and Muslim books, but not in our books.

2- Probably, because in industry, normally the people are not so close to each other, like in prayers.