Matsyapurana 144.49

144.49

yugasvabhāvāḥ saṃdhyāsu avatiṣṭhanti pādataḥ
saṃdhyāsvabhāvāḥ svāṃśeṣu pādenaivāvatasthire //

This is about Kaliyuga, now hear about its Sandhya and Sandhyâṃśa In every age every three stages become void of siddhi, and during the Sandhyâ period only one part of the usages of the age exist which becomes thus one part, in Sandhyâṃśa, one pâda of that of Sandhyâ exists In this way, in the final Sandhyâṃsa of the Kaliyuga, one governor amongst the irreligious subjects arises 48 50