Not just that but their Shaykh will answer for them on the Day of Qiyamat. This is one of the reasons why so many Muslims don't have good opinions about Tasawwuf, as fake Sufis have over-shadowed the real Tasawwuf. During the time of Hafiz ibn Hajar , some fake Sufis claimed that Prophet is present in the grave when a person is taken to his grave and Munkar Nakir come to question. He refuted them and said this has no basis in Islam.