[Fujita 1990] Fujita, Kōtatsu. “The Textual Origins of the Kuan Wu-liang-shou ching: A Canonical Scripture of Pure Land Buddhism.” In Chinese Buddhist Apocrypha, edited by Robert Buswell, 149–173. Honolulu: University of Hawai`i Press, 1990.
— 161, 170 n. 89
The 觀佛三昧海經 T643 ("Samādhi Sea Sūtra", Fujita; "Ocean Samādhi Sūtra", Yamabe) mentions a "weiwu samādhi" 惟無三昧, which is thought to have its source in the Weiwu sanmei jing 惟無三昧經. However, Dao'an labelled the Weiwu sanmei jing as “apocryphal.” However, according to Fujita, the concept of weiwu sanmei was also found in the Guan fo sanmei hai jing 首楞嚴三昧經 T642 and the Guan yaowang yaoshang erpusa jing 觀藥王藥上二菩薩經 ("Baiṣajyarāja Contemplation Sūtra") T1161. Fujita refers to CSZJJ T55:2145.38c: 惟務三昧經一卷(或作惟無三昧, 38c1-2; in the 新集安公疑經錄).
As reported by Sengyou in the portion of CSZJJ entitled 新集安公疑經錄, a Weiwu sanmei jing 惟務三昧經 is listed as one of twenty-six "dubious" 疑 sūtras by Dao'an in his Zongli zhongjing mulu 綜理衆經目錄. A citation from the text is preserved at Jing lü yi xiang 經律異相 , as discussed by Ochiai (1994).
Ochiai also discusses a Dunhuang manuscript preserved at the Taipei Central Library which bears a similar title in a colophon, Weijiao sanmei jing 惟教三昧經, but argues that it does not preserve any part of this text, but rather, represents the lost Yijiao sanmei jing 遺教三昧經 in two fascicles.