Is it necessary to have permission from the business owner in order for prayer to be valid? Is prayer valid if non-mahrams see you?

Obligation of making the rows straight

Imaam waiting for members of the congregation during rukoo’

One who joined the prayer late is praying alone and he should not let anyone pass in front of him

Telling the imaam to wait

Incense-burner in front of people who are praying

Complete what you forgot if the time is short

The standard of what is too long or too short in prayer is what is narrated in the Sunnah and is not what people think or like

Delaying prayer until night-time because of work

Ruling on taking a Mus-haf from the mosque, elongating the back excessively during prostration, and fidgeting during prayer