The lord of Sachi, when fallen into misery in consequence of having slain Vritra, became freed from his sin, by performing his ablutions in this Samanga.
Siward had driven a dragon, which had killed men and cattle in great numbers, from one of the Orkney Islands; and it is in imitation of this exploit that Bjarki is represented ashaving slain a winged monster (dragon).
The fact that it was not uncommon at the time the saga was composed for a popular hero to be represented as having slain a dragon made it all the easier for the author of the Hrólfssaga to imitate this feature of the Siward saga.
Then the ape-bannered Jishnu, having slain a large number of Samsaptakas by means of his celestial weapons, proceeded towards his tent, mounted on that victorious car of his.
Alas, having slain, for the sake of the earth, such lords of earth as deserved not to be slain by us, we are bearing the weight of existence, deprived of friends and reft of the very objects of life.
O my father, O my city, whom I basely abandoned, having slain my brother.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "having slain" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.