Here is a AP High Court judgment aligning to the principle of fixing 1/3rd of Salary as Maintenance as well as Monthly Interim Maintenance under Hindu Adoptions and Maintenance Act, 1956.
“…finding had been recorded even by the appellate Court that the principle of 1/3rd salary can be taken as the basis for fixing the quantum. Hence, in this view of the matter, the judgment and decree of the Court of first instance granting Rs. 800/- per month are liable to be restored.
G. Chilakamma Vs G. Sattaiah on 20 February, 2003
The reasons why the difference of amount had been granted for the said period and the subsequent period, had not been recorded. it would be just and reasonable to grant the same quantum of maintenance of Rs. 800/- during the period of pendency of the suit also.
Citation : 2003 (4) ALD 219, 2003 (5) ALT 354
Indiankanoon.org link : https://indiankanoon.org/doc/232227/