Ujjvalanilamani 11.84

11.84

yathā śrī-daśame (10.47.47)-
paraṃ saukhyaṃ hi nairāśyaṃ svairiṇy apy āha piṅgalā |
taj jānatīnāṃ naḥ kṛṣṇe tathāpy āśā duratyayā //

As in the Tenth Canto [of Śrīmad-Bhāgavatam] (10.47.47):
"Freedom from hope is indeed the supreme happiness," said even the unchaste Piṅgalā;
yet for us who know that, hope toward Kṛṣṇa is insurmountable.