cakrāyudhasya nāmāni sadā sarvatra kīrtayet
cakrāyudhasya nāmāni sadā sarvatra kīrtayet |
nāśaucaṁ kīrtane tasya sa pavitra-karo yataḥ ||
(Padma Purāṇa; Skanda Purāṇa; Viṣṇu-dharmottama; cited in Hari-bhakti-vilāsa: 11.409)
“One should always and everywhere chant the names of the Wielder of the cakra since he is purifying and there is no [consideration of] impurity in chanting about him.”