Is it a sin not to take part in mourning ceremonies for Imam Hussain (AS)? The Grand Ayatollah Shobairi’s answer

The Grand Ayatollah Shobairi Zanjani answered a question about not taking part in mourning ceremonies for Imam Hussain (AS).

Question: Is it Wajib to take part in mourning ceremonies for Imam Hussain (AS)? If a person does not take part in these ceremonies, is he/she committing sin?

The Grand Ayatollah Shobairi: If not taking part in these ceremonies is denial of mourning, it is not allowed.