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They never use the terms 'constructed' and 'cited', which have different meanings, such that it cannot be conclusively determined whether that part was newly created by Haribhadra or if it was a summary or expansion of one or more commentaries. In the same way, there is a lack of clarity at the end of the chapters written by Yashobhadra. When the phrase 'Yashobhadra Nirvahitayam' is present, writing 'Anya Karturayam' is either superfluous or indicative of some alternative meaning.
Observing all these inconsistencies suggests that the mentions at the end of the chapters were inserted at the same or different times by one or more authors while copying. The basis for the creation of such mentions is the poetic prose written by Yashobhadra's disciple at the beginning of his work.
The idea of the aforementioned mentions being added later is further supported by the fact that the term 'Dupadupikayam', found at the end of the chapters, is often erroneous in many places. However, based on those mentions, the following conclusions can be drawn:
1. Haribhadra wrote a commentary on the Tattvartha-bhashya, which is a compilation of earlier or contemporary brief fragmented and unfragmented commentaries, as it has incorporated those commentaries appropriately.
2. Yashobhadra and his disciple completed Haribhadra's incomplete commentary based on the commentary of Gandhahasti.
3. The name 'Dupadupika' for the commentary (if this name is indeed authentic and assigned by the authors) seems to have arisen because it was completed in fragments, not by a single individual. In some copies, there is an alternate reading of 'Dupadupika'. The term 'Dupadupika' has not been seen or heard elsewhere aside from this context. It is possible that it is a corrupt reading or a local term. As I had previously imagined, its meaning might be some kind of boat, while a learned friend had suggested it could be a corrupt form of the Sanskrit term 'Udupika'. However, upon reflection, that idea and information do not seem correct now. Whatever Yashobhadra's disciple concluded at the end...
1. See the introduction to the Gujarati Tattvartha-vivechana, p. 84.