[*] 1121. The article often takes the place of an unemphatic possessive pronoun when there is no doubt as to the possessor. ““Κῦρος καταπηδήσα_ς ἀπὸ τοῦ ἅρματος τὸν θώρα_κα ἐνέδυ_” Cyrus leaped down from his chariot and put on his breastplate” X. A. 1.8.3.

http://www.perseus.tufts.edu/hopper/text?doc=Perseus:text:1999.04.0007:smythp=1121

#AncientGreek