Skanda Purana 5.18.104

5.18.104

atha tāstāpasānrājā provāca praṇataḥ sthitaḥ ..
saṃdhyākālaḥ samāyātaḥ sāṃprataṃ munisattamāḥ ..
tasmātsaṃdhyāvidhiḥ kāryaḥ sarvaireva yathocitaḥ .. 104 ..

Then the king, standing with head bowed, said to those ascetics: / "The twilight hour has now arrived, O best of sages; / therefore, the evening rite ought to be performed by everyone properly."