15.Be that as it may, as far as the present case is concerned, not only the Appellant/Wife but also on the side of the Respondent/Husband, no documentary evidence was produced to establish what exactly the monthly income earned by the Respondent/Husband. In the absence of any documentary evidence being produced before the Learned Principal Judge, Family Court, Chennai in I.A.No.1755 of 2014, the Learned Principal Judge, Family Court, Chennai in I.A.No.1755 of 2014 in O.P.No.4433 of 2012 had rightly fixed the monthly maintenance sum as Rs.3000/- to be payable by the Respondent/Husband to the Appellant/Wife. Viewed in that perspective, the order passed by the Learned Principal Judge, Family Court, Chennai in I.A.1755 of 2014 in O.P.No.4433 of 2012 dated 06.08.2015 in determining the monthly maintenance of Rs.3000/- per month to be paid to the Appellant/Wife by the Respondent/Husband does not suffer from any material irregularity or patent legal infirmities in the eye of Law. Consequently, the Civil Miscellaneous Appeal fails.