Complex sentence: Compare for example the ship burial of the Rus' described by Ibn Fadlan, where a female slave is burned with her master, however in this ritual the slave girl is stabbed to death prior to being burned.
Split into simpler sentences: Compare for example the ship burial of the Rus' described by Ibn Fadlan, where a female slave is burned with her master. In the described ritual, however, the slave girl is stabbed to death prior to being burned.