In beasid temple, here is how you get the secret treasure to get the sphere to glow in baaj temple:
1. move to the back of the first area and examine the glyph on the wall. This ancient ideogram helps open a new path. Another glyph glows on the right side of the room. Examine it to reveal a secret chamber.
2. Descend the stairs to the small overhang on the wall. Take the glyph sphere. Move to the door at the bottom of the stairs, and insert the glyph spheres to open it.
3. Take the glyph sphere frm the open door panel, and proceed to the next sphere recess.
4. Insert the glyph sphere to reveal a secret room. Inside is a Destruction Sphere, but dont't take it just yet. Proceed to the next area.
5. Examine the runes across from the pedistal to reveal a glyph. Examine the glyph again to open a hidden chamber. Enter the chamber and remove the besaid sphere.
6. Insert the besaid sphere into the pedistal. This reveals yet another chamber, and tidus pushed the pedistal inside.
7. At this point, leave the pedistal and return to the destruction sphere.
8.Place the destruction sphere in the slot where you found the besaid sphere. This opens a hidden chamber on the far side of the Cloister.
9. Go there to take the Rod of Wisdom from the treasure chest.
10. Return to the pedistal and push it into the room until it locks into place and sinks into the floor.
Of all the things I have lost, I miss my mind the most.