So the statement that no nafl salah can be perform after asr does it mean that on once asr is perform whether beginning time or delayed. Is it that you cannot perform any nafl salah home or at the masjid until maghrib.
Once you have performed the Asr Salah, whether in its beginning time or at a later (permissible) time, it will not be permissible to perform any Nafl Salah after it until Magrib. It is the same whether you are at home or in the masjid.
And Allah Knows Best
Mufti Waseem Khan