KN:Sn quote in Kacc 1-2-4 (~v. 15)

In Kacc. verse 1-2-4 (~v. 15) we find the following quotation:

   "saddhiidha vitta.m purisassa se.t.tha.m"

This is evidently from KN:Sn, Uragavaggo (viz., ch 1), a verse
appearing in the dialogue with Alavaka, viz., part 10; however, my
Sinhalese e-text of the passage in question (in the Sn) is utterly
mangled, including, e.g. "citta.m" given erroneously for "vitta.m".

Is this passage (in the Sn) genuinely different in the Sinhalese KN?
The Thai KN:Sn seems to be identical to Kacc.'s quotation --but if
there is a significant difference in the Sinhalese canon this would be
noteworthy, as Pind's article already has drawn attention to the
possibility that in at least one instance the Burmese canon was
corrected with reference to Kacc.

Frankly, I expect that there is simply a blob of ink in the Sinhalese
BJT, and the confusion results from the ambiguity in the series of
antique ligatures used for the word "saddhiidha" --but if there is a
difference, it is worth noting.

E.M.