The Duke:
"Show us your rite. We will judge if it must continue or is a waste of water. And then you people can choose. Join Shaa or abandon the rite."
"I will of course remain faithful to Shaa. Come."
Ajakstu Gul saw nothing valuable in the first room, but the second room the humans (and Lady) are led to is... more interesting.
First of all, it's slightly better lit, by more working panels in the ceiling.
Another light source is the giant monitor on the far wall.
Two doorways, one to either side of the huge monitor, are also enticing, although each is also guarded by two larger-than-average Onsu with metal spears.
On the screen is the holy symbol of Shaa.
https://encrypted-tbn0.gstatic...OBEx9MA&usqp=CAU
Seated at a swiveling chair that is set into the floor is an elderly Onsu.
"That is Shuak," the guide says quietly,
"High Priest of Shaa."
Shuak swivels around.
"Who are these... visitors...?" Shuak asks.
"They have come to learn of Shaa," says the guide.
"They do not believe, but they are Shaa-curious. They wish to witness the Rite of Purification. This may be the will of Shaa, since they will surely become believers."
Shuak ponders this.
"I see from their silence that they are willing to believe... to watch and listen, as the holy must do. This may, indeed, be a good omen. Witness, then, visitors, the first of the signs."
Shuak swivels back and pushes a spot on the wall in front of him.
The symbol of Shaa disappears from the screen, and words appear:
...ATTEMPTING TO CONNECT...
"The holy glyphs," intones Shuak, who apparently can't read them.
A quiet noise begins...
TCZZSHHHHHHHHHHHHHHHH which then changes to
SHAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...
"Shaaaaaaaaaaaaa..." moan all of the Onsu in the room.
Just seconds later, the words on screen change. ATTEMPTED CONNECTION: FAILURE
A voice speaks from all around the room, everywhere and nowhere.
"The connection is not complete. There are two obstructions, in sectors 2 and 3. It is recommended that the cache be purged. All data impurities must be cleansed."
Shuak's lips pull back in a beatific feline grin.
"Our connection with the divine is not complete. The Cutari and the Durka obstruct the cycle. They must be destroyed, or converted and made pure in the light of Shaa. They resist both destruction and conversion, for they are impure, but Shaa can wait forever. In the meantime, we seek to cleanse ourselves of all data impurities. Shaa understands that it is all we can do." He licks the back of his hand in a ritual gesture. All Onsu in the room copy the gesture, reverently.