Srimad Bhagavatam Canto 05, Chapter 19, Text 27

SB 5.19.27

satyam disaty arthitam arthito nrnam
 naivarthado yat punar arthita yatah
svayam vidhatte bhajatam anicchatam
 icchapidhanam nija-pada-pallavam
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
The Supreme Personality of Godhead fulfills the material desires of a devotee who approaches Him with such motives, but He does not bestow benedictions upon the devotee that will cause him to demand more benedictions again. However, the Lord willingly gives the devotee shelter at His own lotus feet, even though such a person does not aspire for it, and that shelter satisfies all his desires. That is the Supreme Personality’s special mercy.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
The devotees mentioned in the previous verse approach the Supreme Personality of Godhead with material motives, but this verse explains how such devotees are saved from those desires. Srimad-Bhagavatam (2.3.10) advises:
akamah sarva-kamo va
 moksa-kama udara-dhih
tivrena bhakti-yogena
 yajeta purusam param
“Whether one is freed from all material desires, is full of material desires, or desires to become one with the Supreme, he should engage in devotional service.” In this way, not only will the devotee’s desires be fulfilled, but the day will come when he will have no other desire than to serve the lotus feet of the Lord. One who engages in the service of the Lord with some motive is called a sakama-bhakta, and one who serves the Lord without any motives is called an akama-bhakta. Krsna is so merciful that He turns a sakama-bhakta into an akama-bhakta. A pure devotee, an akama-bhakta, who has no material motives, is satisfied simply to serve the lotus feet of the Lord. This is confirmed in Bhagavad-gita (6.22). Yam labdhva caparam labham manyate nadhikam tatah: if one engages in the service of the lotus feet of the Lord, he does not want anything more. This is the highest stage of devotional service. The Lord is so kind even to a sakama-bhakta, a motivated devotee, that He satisfies his desires in such a way that one day he becomes an akama-bhakta. Dhruva Maharaja, for example, became a bhakta with the motive of getting a better kingdom than that of his father, but finally he became an akama-bhakta and said to the Lord, svamin krtartho ’smi varam na yace: “My dear Lord, I am very satisfied simply to serve Your lotus feet. I do not want any material benefits.” Sometimes it is found that a small child eats dirty things, but his parents take away the dirty things and offer him a sandesa or some other sweetmeat. Devotees who aspire for material benedictions are compared to such children. The Lord is so kind that He takes away their material desires and gives them the highest benediction. Therefore, even for material motives, one should not worship anyone other than the Supreme Personality of Godhead; one must fully engage himself in the devotional service of the Lord so that all his desires will be fulfilled and at the end he can go back home, back to Godhead. This is explained in Caitanya-caritamrta (Madhya 22.37-39, 41) as follows.
Anyakami — a devotee may desire something other than service to the lotus feet of the Lord; yadi kare krsnera bhajana — but if he engages in Lord Krsna’s service; na magiteha krsna tare dena sva-carana — Krsna gives him shelter at His lotus feet, even though he does not aspire for it. Krsna kahe — the Lord says; ama bhaje — “He is engaged in My service”; mage visaya-sukha — “but he wants the benefits of material sense gratification.” Amrta chadi’ visa mage: — “such a devotee is like a person who asks for poison instead of nectar.” Ei bada murkha: “That is his foolishness.” Ami-vijña: “But I am experienced.” Ei murkhe ‘visaya’ kene diba: “Why should I give such a foolish person the dirty things of material enjoyment?” Sva-carana-mrta: “It would be better for Me to give him shelter at My lotus feet.” ‘Visaya’ bhulaiba: “I shall cause him to forget all material desires.” Kama lagi’ krsna bhaje — if one engages in the service of the Lord for sense gratification; paya krsna-rase — the result is that he ultimately gets a taste for serving the lotus feet of the Lord. Kama chadi’ ‘dasa’ haite haya abhilase: He then gives up all material desires and wants to become an eternal servant of the Lord.
Srimad Bhagavatam Canto 05, Chapter 19, Text 26
Srimad Bhagavatam Canto 05, Chapter 19, Text 28