The Maldives is a small island nation struggling with a heavy debt load. Its borrowing includes $500 million worth of something called sukuk. These are bond-like investments that don't pay interest, to be in line with Islamic law. Today on the show, we explain how sukuk works, how it fits into the larger world of Islamic finance and what might happen if the Maldives can't pay back its debt.For sponsor-free episodes of The Indicator from Planet Money, subscribe to Planet Money+ via Apple Podcasts or at plus.npr.org.Music by Drop Electric. Find us: TikTok, Instagram, Facebook, Newsletter.