How do I ask bitcoind to expose a private key?

As a cryptocurrency enthusiast and investor, I'm often curious about the intricacies of digital currency management. One aspect that particularly piques my interest is the handling of private keys in bitcoind, the core Bitcoin daemon. I understand that private keys are the foundation of cryptocurrency security, allowing owners to access and transact with their digital assets. However, I'm unclear on the proper way to request that bitcoind expose a private key for a specific address. Could you please guide me through the process of securely and responsibly accessing a private key from bitcoind? Keep in mind that I value security and best practices, so any recommendations that prioritize these factors would be greatly appreciated.