Narrated Abu Huraira:
Allah's Messenger (ﷺ) said, "Whoever has oppressed another person concerning his reputation or anything else, he should beg him to forgive him before the Day of Resurrection when there will be no money (to compensate for wrong deeds), but if he has good deeds, those good deeds will be taken from him according to his oppression which he has done, and if he has no good deeds, the sins of the oppressed person will be loaded on him." (Sahih al-Bukhari 2449 Book 46, Hadith 10; bold emphasis mine)
I'm confused, is everyone accountable for his/her own sins or not? Doesn't this contradict the principle that none will bear the burden of another?
The sins belonged to the oppressed. The oppressor will bear the sins of the oppressed. Hence the oppressor will be punished from the sins he didn't commit. I don't get it.