Wikipedia
Ziyarat
Ziyārah or Ziyarat is an Arabic term which literally means "visit", and is used to refer to a form of pilgrimage to sites associated with Muhammad, his family members and descendants (including the Shī‘ī Imāms), his companions and other venerated figures in Islam such as the prophets, Sufi Saints and Islamic scholars. Sites of pilgrimage include mosques, graves, battlefields, mountains, and caves.
Ziyārat can also refer to a form of supplication made by the Shia, in which they send salutations and greetings to Muhammad and his family.