How to implement ASP.NET core saml authentication with azure ad

Hi All,
I am working mvc 5 .net core 3.1 web application, i have implemented Saml Azure AD authentication with web application authentication working as we expected but  Claims cant able to save the in application after the successfully login .  If we remove the app.UseAuthentication();
From startup page claims saved successfully.
How can I achieve the task ,kindly help me completed the task
  Below link i used to refer : https://cmatskas.com/asp-net-core-saml-authentication-with-azure-ad/