Agis and Cleomenes (Agis.18.4-Agis.19.1)

They were all comrades of his, but Amphares had also borrowed recently some costly vestures and beakers from Agesistrata, and therefore plotted to destroy the king and the women, that he might not have to return what he had borrowed. And he, certainly, more than anyone else, as we are told, followed the counsels of Leonidas and embittered the ephors, of whom he was one, against Agis.

Now Agis spent most of his time in the sanctuary, but was wont to go down from time to time to his bath. There, then, they determined to seize him, when he was outside the sanctuary. So they waited till he had finished his bath, and then came to meet him with friendly greetings, and walked along with him, conversing and jesting with him after the manner of youthful comrades.