The charge of Viṣṇudūtas for the Yamadūta was that they did not know whom to arrest and whom not to arrest. Therefore he was criticise Yamarāja is meant for arresting the criminals, sinful persons. But these Yamadūtas came to arrest Ajāmila, who was already relieved from all sinful actions simply by chanting "Nārāyaṇa." That was not known to them. So in order to criticize them that, "You do not know where to go and where not to go," they described in so many ways.
Now they are positively saying that ayaṁ hi kṛta-nirveśo janma-koṭy-aṁhasām api (SB 6.2.7): "Even though he committed sinful activity for millions of years, he is now free." Ayaṁ hi kṛta-nirveśaḥ: "He has completely counteracted all those sinful activities." How? Yad vyājahāra vivaśo nāma svasty-ayanaṁ hareḥ. Vivaśaḥ: "Somehow or other, he has chanted the holy name of Hari."
Asya pāpena daṇḍe kim artham akrośa kriyate tatrāhur ayaṁ hi (Śrīdhara Svāmī commentary). "Why you are attempting to arrest this person as criminal?" Yamadūta, yad yada vivaśi 'pi harer nāma vyājahāra uccaritavan: "There was no intention of chanting the holy name of Hari, but even though consciously or unconsciously he has chanted the holy name of Hari, therefore he is now free."
Now, we have to note this important that the powerful hari-nāma is so strong that even one consciously or unconscious . . . sometimes they imitate, "Hare Kṛṣṇa." They have no intention to chant the holy name of Kṛṣṇa, but they imitate or criticize, "Hare Kṛṣṇa." That has also effect. That has also effect. Just like the Muhammadans during Caitanya Mahāprabhu's time, they sometimes used to criticize, "These Hindus are chanting Hare Kṛṣṇa." So they were imitating. So gradually they also became devotees.
Yad vyājahāra vivaśo nāma svasty-ayanaṁ hareḥ. Vivaśi 'pi harer nāma vyājahāra uccaritavan na kevalam prāyaścitta. Mātram harer nāma api tu svasty-ayanaṁ makara-sādhanam api. So Śrīdhara Svāmī says that "This chanting of holy name of Nārāyaṇa, Hari, is not only counteracting his all sinful reactions, but he is now eligible to become liberated and being transferred to the spiritual world. Not only he has been freed from, but there is a reward for it." You see?