The message was delivered via Kanye West’s website.

Yasiin Bey (FKA Mos Def) has issued an audio statement through the website of close friend Kanye West, in which he discusses his recent arrest in South Africa and announces his retirement from music.

Bey was detained on January 14 for attempting to leave the country with “fraudulent documents”, but in his statement Bey argues that the “world passport” he’s travelling with is widely accepted and that there are “political” reasons behind his arrest.

“Anyone can do the research about the world passport; it’s not a fictitious document. It is not meant to deceive or derive unlawful benefit from any nation’s state, at all,” Bey says. “In fact, the world passport has been accepted here on numerous occasions in South Africa, in ports Johannesburg and Cape Town as early as 1996 and as late as 2015.

“I’ve made no false claims. I have not misrepresented myself. I’m under unnecessary state supervision and scrutiny, and I have reason to believe or suspect that there are political motivations behind the way I’m being treated, because this is following no reasonable train of logic.”

The message starts with a freestyle riffing on Kanye’s recent track with Kendrick Lamar, saying that there would be “no more parties in SA”. It concludes with the announcement of his retirement from music and Hollywood, “related but not directly related” to his arrest, stating his final album will be released this year.

South African immigration authorities said that Bey and his family had 14 days to leave the country, but in his statement Bey says that they had been “prevented from leaving unjustly, unlawfully and without any logical reason.”