Gyrfalcon's Keep stained glass

To give ones own toe. What would this mean? Even Asvoria did not know, and she would not hide this. 

I do not know, She answered, truthful. It has not been done. At least, not in the eyes of others. If there was someone in existence that had done this, none would know it.

Now, to Treva, she looked back with a thoughtful, witty shimmer in her eyes. Though— I would not suggest being so bold and impulsive as to do this yourself. Perhaps it may have even been seen as disrespectful. Thor had chosen Aurvandil. His toe alone was given to the stars. Repeating this action on your own behalf may come as an offense to his blessing. This is why we give smaller, inferior animals instead of ourselves. We are in no way equal to Aurvandil, nor Thor's grace, as to which was bestowed.