What does Losberne give Giles? Why does Giles say it was given to him? Is his the truth?

From the text;

"The subject matter of this conference was not disclosed in the parlour, but the kitchen was speedily enlightened concerning it; for Mr. Giles walked straight thither, and having called for a mug of ale, announced, with an air of majesty, which was highly effective, that it had pleased his mistress, in consideration of his gallant behaviour on the occasion of that attempted robbery, to depost, in the local savings-bank, the sum of five-and-twenty pounds, for his sole use and benefit."