Revākhaṇḍa of the Skandapurāṇa manuscripts (RKS) 57.29

57.29

viparītaṃ kalau dharmaṃ nagnā muṇḍā malāśinaḥ /
tasmāt taṃ ca parityajya tretādharmaṃ samācaret //

In the Kali age, religious duty becomes inverted: [there are] naked ones, shaven-headed ones, and eaters of filth. / Therefore, having abandoned that, one should practice the religious duty of the Tretā age.