What is the ruling on being lenient in forsaking congregational prayer in the mosque? And is the Hadith of Ibn Abbas, which mentions that whoever forsakes congregational prayer is in the Fire, authentic? And is it a severe warning for whoever forsakes prayer in the mosque?

Neglecting congregational prayer is a characteristic of hypocrites, and it is not permissible for a Muslim to miss it except for an excuse, because it is obligatory for the able-bodied man, and congregational prayer in the mosque is superior. It was narrated that Ibn Abbas was asked about a man who fasts during the day and prays at night but does not attend Friday prayer or congregational prayers. He replied, "He is in the Hellfire." The meaning of the Hadith is that he does not attend congregational prayer or Friday prayer out of disdain, contempt, and negligence towards them. This narration was graded as weak by Al-Albani, but severe warnings have been authentically established in sound Hadiths for those who miss Friday prayer and congregational prayers without a valid excuse.