In the course of this research on Egyptian funerary religion, and the god Anubis in particular, it has been brought that a number of the texts  studied intensively were of sufficient interest to justify fresh textual editions with commentary and interpretation. The document under study here is from the Theban Book of the Dead. It has been described as 'Chapter 125: Introduction' by Budge and as 'Spelll25A' by TG Allen. Confusion with that part of spell 125 which contains the Negative Statements (called 'l25A' by Maystre and others) is therefore easy. For this reason, and partly because our text is obviously quite separate from spell 125 , it's felt it appropriate to call the former 'spell 194.
The main text of spell 194 occurs in three papyri (the Ramesside pBM 10047, and pBM 10472 and pLeiden T 3, both of Dyn XXI). A supplementary section is found in pBM 10047, pLeiden T 3, and also in the unpublished late XXIst Dyn pCairo SR IV 982 and pCairo SR VII 10228. Vignettes which in some way relate to the text survive in T 3, pBM 10554, pHabana 1, and pLouvre 3292, as well as in the two previously-cited Cairo papyri, all of Dyn XXI.