Vinaya rule about engaging in a previously held profession?

[Khemarato.bhikkhu]

Ven @anyatama,

Thanks for your reply. That’s also my understanding of the vinaya.

@anyatama

To learn or teach, as far as I know, this is not an offense.

However, Ven @Dhammanando, three posts above mine, makes precisely this claim:

@Dhammanando

After ordaining the study of medicine would be prohibited.

I did find a relevant section in the BMC2, but unfortunately I found myself unable to follow the references