Is performing the Fard salahs in jama’ah an obligation for men? If so, is this obligation discharged by performing them in congregation at home, in the workplace or another musalla? Or is it a further obligation to perform the jama’ah in the masjid?
‘Allamah Zafar Ahmad al-‘Uthmani discusses the answers to these questions in detail in the section from his I’la’ al-Sunan translated in the file linked below. He provides a thorough analysis of the hadiths on the topic and carefully determines the position of the Hanafi madhhab from the statements of its great early jurists, like al-Halwani, Qadi Khan and al-Kasani (may Allah have mercy on them).
The translation includes the chapter of I’la’ al-Sunan that immediately follows on the valid Shar’i excuses that frees one of blame if he were to not attend the masjid for jama’ah.