SHAFAQNA – The Grand Ayatollah Vahid Khorasani answered a question about prostration (Sijdah) of Ziarat Ashura.
Question: Is the prostration of Ziarat Ashura Wajeb? And when the Zekr of the Prostration is recited, is it possible not to prostrate?
The Grand Ayatollah Vahid Khorasani: In narration books that mention Ziarat Ashura it is ordered to prostrate at the end of Ziarat and if a person wants to attain the benefit of the full Ziarat must perform the prostration.
Source: Persian SHAFAQNA