Borg. Ar. 22, one of the manuscripts containing the Arabic Testamentum Domini, has a liturgical appendix with material related to, but distinct from, parallel material in Testamentum Domini. Some of this was published by Baumstark in “Eine aegyptische Mess- und Taufliturgie vermutlich des 6 Jahrhunderts” Oriens christianus 1 (1901) p. 1-45. I had a note from a colleague querying Baumstark’s rendition of بحميم الميلاد الثانى in one of the prayers after baptism, as “per aquam calidam regenerationis.” The question was whether I could make any sense of it; where, indeed, did Baumstark find the aqua?
My first look was to see what the word was in the Testamentum Domini. Although this isn’t straight Testamentum there is a comparable prayer there, where the word is ܣܚܬܐ. That is straightforward. But this passage is derived from from Traditio apostolica. The Latin here is lauacrum regenerationis, with an apparent reference to Titus 3:5, and so in keeping with the Syriac of Testamentum Domini.
The Sahidic of this section of Traditio apostolica is not extant and the Bohairic rather free but the Arabic is للحمي الى للولدة الثانية (Horner, Statutes of the apostles, 101), thus using the same root. So I went to check the dictionaries, going first to Wehr, to find on p203 حم with form 10 as “take a bath”. And so to Lane, who has this form 10, but also the noun حمة meaning a hot spring. I can only think that the root came to refer to a bath through metonymy, though the usage here is otherwise unattested. If this is the case the meaning is straightforward and entirely in keeping with the original, and although Baumstark’s translation is rather forced we can see where he got the water from!
However, beyond the minutia of this single word, the correspondence reminds me of how fascinating this liturgical appendix is as witness to the Egyptian Nachleben of the liturgies of Testamentum Domini.