In 'Yakushi ruriko shichibutsu hongan kudokukyo (Shichibutsu Yakushikyo)' translated by Gijo and 'Yakushi Nyorai hongankyo' translated by Daruma Gyuta, original vows and bukkokudo (the land that Buddha has purified) of Shichibutsu, including Yakushi Nyorai, are advocated.
義浄訳「薬師瑠璃光七仏本願功徳経（七仏薬師経）」や達磨笈多訳「薬師如来本願経」では、薬師如来を主体とした七尊の仏の本願と仏国土が説かれる。