This similarity of approach and content lets the rare points of divergence appear in a striking way. These are:
- 1. The validity of Pāñcarātra texts, which are admitted among the valid sacred texts together with the Śaiva ones in the SĀP (although only with a negative formulation, i.e., as ''not invalid''), whereas the ĀḌ is much more cautious.
- 2. The status of several Śaiva cults, which are seen with more suspicion in the ĀḌ, whereas the SĀP states that Śaivas do not contradict the Veda and does not deal extensively with more ''problematic'' Śaiva and Śākta sects .
One could try to solve the problem by considering the fact that the Pāñcarātrins are only mentioned in passing in the SĀP, whereas they are a main topic of the ĀḌ, since the queen seems to favour them. Moreover, one might add that the ĀḌ could reflect a later stage of Jayanta's thought.
A different tentative explanation is to consider the distinct purpose of the two texts. The ĀḌ tells the story of Saṅkarṣaṇa who is appointed by king Śaṅkaravarman as a sort of ''Minister of religious affairs''. Thus, his position is not so far from that of the historical Jayanta, who was also a minister of Śaṅkaravarman. Due to his political role, Saṅkarṣaṇa needs to look at religions also from the point of view of their social impact. Consequently, he needs to take care of antisocial religious practices, such as the ones of some Śaiva ascetics. He also needs to take care of the disturbing behaviour of the Pāñcarātrins, who claim to be Brāhmaṇas, and thus intervene in the Brāhmanas' assemblies.
Thus, it is understandable that Saṅkarṣaṇa needs to clean out the religious horizon. Since Jayanta himself is mentioned negatively by some Śaiva ascetics in the ĀḌ, one might imagine that he also took part to similar campaigns.
By contrast, the SĀP has chiefly theoretical aims as shown already by the fact that it focuses on texts rather than on practices. Therefore, it can deal with the abstract problem of the validity of other sacred texts and only mentions the issue of deviant religious practice insofar as it has an impact on the criterion of the acceptance by the great people. Accordingly, it can be more open towards the other religions, seen as sets of sacred texts rather than as social practices.
The historical ''occasion'' of the SĀP is in fact the intellectual interest on the validity of Sacred Texts which originated around the middle of the first millennium AD and had become much stronger by the time of Jayanta (suffice here to mention Yāmunācārya's Āgamaprāmāṇya, on the validity of Pāñcarātra). This interest focused on the problem of the validity of Sacred Texts other than the Veda and was probably linked with the raise of beliefs external to the Veda, which needed an intellectual discussion and/or an apologetics. Apart from Buddhist and Jaina discussions about the validity of the Buddha's and the Jina's word, even ''Hindū'' authors had to loosen their criteria in order to make room for new beliefs. Already Kumārila feels the need to address the problem of non-Vedic beliefs and concludes that from a certain point of view one can speak of validity in regard to them all (sarveṣāṃ prāmāṇyam, TV ad 1.3.2), since the non-Vedic elements entailed in, e.g., Buddhist texts, can be read in an instrumental way, e.g., as encouraging one to give up one's attachment to worldly things. By contrast, Kumārila is much less tolerant when it comes to the acceptance of other religious practices.
The practical concern re-emerges, within SĀP, in the last section, where the king Śaṅkaravarman's campaigns against the Nīlāmbaras are mentioned and, accordingly, the restrictions listed for texts to be admitted as valid are stricter than what had been established until that point. For instance, although section one's hesitation already showed that one's inner hesitation is not a criterion, the final section lists it among the preconditions for the validity of a sacred text.
For other posts on Jayanta's way of approaching the problem of the validity of other religions, see this post. For the problem of one's emotions as guides while judging about these matters, see this post.