akāmaḥ sarva-kāmo vā
mokṣa-kāma udāra-dhīḥ
tīvreṇa bhakti-yogena
yajeta puruṣaṁ param
akāmaḥ - a pure devotee with no desire for material enjoyment; sarva-kāmaḥ - one who has no end to his desires for material enjoyment; vā - or; mokṣa-kāmaḥ - one who desires to merge into the existence of Brahman; udāra-dhīḥ - being very intelligent; tīvreṇa - firm; bhakti-yogena - by devotional service; yajeta - should worship; puruṣam - the person; param - supreme.
This is a verse from Śrīmad-Bhāgavatam (2.3.10).