bhaktyÄham ekayÄ grÄhyaḥ
Å›raddhayÄtmÄ priyaḥ satÄm
bhaktiḥ punÄti man-niá¹£á¹hÄ
Å›va-pÄkÄn api sambhavÄt
bhaktyÄ - by devotional service; aham - I, the Supreme Personality of Godhead; ekayÄ - unflinching; grÄhyaḥ - obtainable; Å›raddhayÄ - by faith; ÄtmÄ - the most dear; priyaḥ - to be served; satÄm - by the devotees; bhaktiḥ - the devotional service; punÄti - purifies; mat-niá¹£á¹hÄ - fixed only on Me; Å›va-pÄkÄn - the lowest grade of human beings, who are accustomed to eating dogs; api - certainly; sambhavÄt - from all faults due to birth and so on.
This verse is from ÅšrÄ«mad-BhÄgavatam (11.14.21).