How to login auth0 and save login and password in Cookie

Hi all,

After input the login and password in the auth0 login page, we tried to create a Cookie with our login and password in our Webhook and then to get it in the login method into our website.
Tried to check crating cookies with different domains like website domain, {name} domain. But cookies don’t create, and I couldn’t get them.
Maybe someone came across such a problem, or maybe this method is not suitable and we need to use some other method? Perhaps in some other way, we can transfer credentials to our application? I would be glad for any help, and possibly examples of the implementation.

Thank you!