It is more rewarding for him to join the congregation in the masjid but if the masjid is far away or this is for Tahajjud, this is permissible.
Kindly refer to the following link(s):
https://islamqa.info/en/2034
It is more rewarding for him to join the congregation in the masjid but if the masjid is far away or this is for Tahajjud, this is permissible.
Kindly refer to the following link(s):
https://islamqa.info/en/2034