SQL & PL/SQL :: Unable To Insert Rows Into Table

I am unable to insert the rows into table after creation of trigger because Mutating error was getting.

SQL> desc test;
Name Null? Type
----------------------------------------- -------- ----------------------------
EMP_NAME VARCHAR2(10)
EMP_NO VARCHAR2(10)

SQL> select * from test;

EMP_NAME EMP_NO
---------- ----------
ORACLE PC729
JAVA PC047
C PC0729

SQL> create or replace trigger trig_test
2 after insert on test
3 for each row
4 declare
5 ename varchar2(10);
6 eno varchar2(10);
7 begin
8 select emp_name,emp_no into ename,eno from test
9 where emp_no ='1';
10 insert into test2(emp_name,emp_no) values(
11 ename,eno);
12 end;
13 /

Trigger created.

SQL> insert into test values ('PRO','1');
insert into test values ('PRO','1')
*
ERROR at line 1:
ORA-04091: table APPS.TEST is mutating, trigger/function may not see it
ORA-06512: at "APPS.TRIG_TEST", line 5
ORA-04088: error during execution of trigger 'APPS.TRIG_TEST'
SQL> spool off;