SB 6.2.33

anyathā mriyamāṇasya
 nāśucer vṛṣalī-pateḥ
vaikuṇṭha-nāma-grahaṇaṁ
 jihvā vaktum ihārhati
Synonyms: 
anyathā — otherwise; mriyamāṇasya — of a person who is just ready for death; na — not; aśuceḥ — most unclean; vṛṣalī-pateḥ — the keeper of a prostitute; vaikuṇṭha — of the Lord of Vaikuṇṭha; nāma-grahaṇam — the chanting of the holy name; jihvā — the tongue; vaktum — to speak; iha — in this situation; arhati — is able.
Translation: 
Were it not for my past devotional service, how could I, a most unclean keeper of a prostitute, have gotten an opportunity to chant the holy name of Vaikuṇṭhapati when I was just ready to die? Certainly it could not have been possible.
Purport: 

The name Vaikuṇṭhapati, which means “the master of the spiritual world,” is not different from the name Vaikuṇṭha. Ajāmila, who was now a realized soul, could understand that because of his past spiritual activities in devotional service, he had gotten this opportunity to chant the holy name of Vaikuṇṭhapati in his horrible condition at the time of death.