I think the dialogue says it all.
SPOILER
Dawnbringer Sain: "What is it, <CHARNAME>? You look downtrodden. How goes your quest to please Sir Sarles?"
[MAIN CHARACTER]: "He has left. I tried to appease him with this illithium alloy, but I failed."
Dawnbringer Sain: "I see. You have done all you can; there is no shame in that. We will wait for another artist to accept a commission. Perhaps they can use this alloy..."
Mornmaster Arval: (looking at the chunk of illithium alloy) "Dawnbringer, I see you have the latest in your artistic acquisitions. Another tribute to the Morninglord from a local artisan?"
Dawnbringer Sain: "That was the intent, Mornmaster, but there has been a setback or two."
Mornmaster Arval: "I don't see why. This new piece is a welcome understatement. It looks as though it represents the shadows receeding from the dawn. Fine work." (He examines the chunk more closely.) "It looks a bit like an illithium derivative? Good. Smudge it up occasionally. We need make-work cleaning to keep the penitents busy. Carry on, Dawnbringer."
Dawnbringer Sain: "Y-yes, Mornmaster Arval." (Turning to your character.) "W-well, by the grace of Lathander, all has worked out for the best! You have obviously been touched by the Morninglord."