url redirection LTM

Try this one-

when HTTP_REQUEST {
if { [HTTP::host] equals "10.1.1.1" and [HTTP::uri] starts_with "/enterprise/payments" } {
    HTTP::redirect "http://abc.com/enterprise/payments"
}
}

If you want request to abc.com come from Virtual server IP, configure Source Address Translation to Auto Map and apply this iRule -

 when CLIENT_ACCEPTED {
 snat [IP::local_addr]
 }