न च प्राकांयमकामायां लभेत ॥ कZ_०४.१२.१३ ॥
na ca prākāṃyam akāmāyāṃ labheta
And no legal right of sexual access (prākāmya) is obtained in the case of a woman who is unwilling (akāmā).
To anchor the entire section’s penalty scheme in a bright-line doctrine: unwillingness blocks entitlement, preventing loopholes in adjudication.