The one-time existence of a commentary to Zhi Mindu's synoptic edition of the Śūraṃgamasamādhi is suggested by the byline at the head of Zhi Mindu's preface, as transmitted in CSZJJ: 三經謝敷合注共四卷. Lamotte (trans. Boin-Webb, 2003) discusses this commentary very briefly, 90.