It is beyond dispute that the interpretation Witzel gives to this passage does not accord with its syntax. This was pointed out, though without consi… - George Cardona

The passage (from Baudha_yana S'rautasu_tra), part of a version of the Puruuravas and Urva'sii legend concerns two children that Urva'sii bore and which were to attain their full life span, in contrast with the previous ones she had put away. On p. 397, line 8, the text says: saayu.m caamaavasu.m ca janayaa.m cakaara 'she bore Saayu and Amaavasu.' Clearly, the following text concerns these two sons, and not one of them along with some vague people. Grammatical points also speak against Witzel's interpretation. First, if amaavasus is taken as amaa 'at home' followed by a form of vas, this causes problems: the imperfect third plural of vas (present vasati vasata.h vasanti etc.) would be avasan; the third plural aorist would be avaatsu.h. I have not had the chance to check Witzel's article again directly, so I cannot say what he says about a purported verb form (a)vasu.h. It is possible, however, that Elst has misunderstood Witzel and that the latter did not mean vasu as a verb form per se. Instead, he may have taken amaa-vasu.h as the nominative singular of a compound amaa- vasu- meaning literally 'stay-at-home', with -vas-u- being a derivate in -u- from -vas. In this case, there is still what Elst points out: an abrupt elliptic syntax that is a mismatch with the earlier mention of Amaavasu along with Aayu. Further, tasya can only be genitive singular and, in accordance with usual Vedic (and later) syntax, should have as antecedent the closest earlier nominal: if we take the text as referring to Amaavasu, all is in order: tasya (sc. Amaavaso.h). Finally, the taddhitaanta derivates aayava and aamaavasava then are correctly parallels to the terms aayu and amaavasu. In sum, everything fits grammatically and thematically if we straightforwardly view the text as concerning the wanderings of two sons of Urva'sii and the people associated with them. There is certainly no good way of having this refer to a people that remained in the west.