John C. Bennett mentions oaths made in temple during Joseph Smith's time.
John C. Bennett, History of the Saints: Or, an Exposé of Joe Smith and Mormonism (Boston: Leland and Whiting, 1842), 276-77
Many of the members consider themselves solemnly bound, in the presence and by the sanction of the Most High God, communicated to them by direct inspiration through his Prophet and representative, Holy Joe Smith, to execute, to the letter, whatever that inspired genius may take it unto his head to command, whether it be treason, murder, arson, or robbery. When the oath has been administered, the candidate is clothed with the robe of the order, and the precious ointment, or consecrated oil, poured upon his head, till it runs down upon his beard and the skirts of his garment. Then the nature, authority, and privileges, of the Holy Priesthood are explained to the candidate, together with the ultimate fate of all Gentiles (as they term those who are not Mormons,) sectarian priests, apostates, and dissenters.