Dear Diwaker,
Please note what you issue is salary slip and not attendance break-up slip. All that is required is to mention attendance in number of days in the salary slip. From the number of days for which a salary is paid, it is obvious that you have included paid offs as well.
Do you have any sense of insecurity that some authority could question on the attendance on the salary slip, does it include weekly offs as well or on all the days of the month your employees worked? But then to show that the employees have given weekly off, you need to maintain attendance register properly and no need to reflect weekly offs even on salary slip as corroborative evidence.
Thanks,
Dinesh Divekar