190
Śrīmad-Bhāgavatam
[Canto 5, Ch. 18
yā tasya te pāda-saroruhārhaṇaṁ nikāmayet sākhila-kāma-lampaṭā tad eva rāsīpsitam īpsito 'rcito yad-bhagna-yācñā bhagavan pratapyate
yā —a woman who;  tasya —of Him;  te —of You;  pāda-saroruha —of the lotus feet;  arhaṇam —the worship;  nikāmayet —fully desires;  sā —such a woman;  akhila-kāma-lampaṭā —although maintaining all kinds of material desire;  tat —that;  eva —only;  rāsi —You award;  īpsitam —some other desired benediction;  īpsitaḥ —being looked to for;  arcitaḥ —worshiped;  yat —from which;  bhagna-yācñā —one who desires objects other than Your lotus feet and who thus becomes broken;  bhagavan —O my Lord;  pratapyate —is pained.
TRANSLATION
My dear Lord, You automatically fulfill all the desires of a woman who worships Your lotus feet in pure love. However, if a woman worships Your lotus feet for a particular purpose, You also quickly fulfill her desires, but in the end she becomes brokenhearted and laments. Therefore one need not worship Your lotus feet for some material benefit.
PURPORT
Śrīla Rūpa Gosvāmī describes pure devotional service as  anyābhilāṣitā-śūnyaṁ jñāna-karmādy-anāvṛtam . One should not worship the Supreme Personality of Godhead to fulfill some material desire for success in fruitive activities or mental speculation. To serve the lotus feet of the Lord means to serve Him exactly as He desires. The neophyte devotee is therefore ordered to worship the Lord strictly according to the regulative principles given by the spiritual master and the  śāstras . By executing devotional service in that way, he gradually becomes attached to Kṛṣṇa, and when his original dormant love for the Lord becomes manifest, he spontaneously serves the Lord without any motive. This condition is the perfect stage of one's relationship with the Lord. The Lord then looks after the comfort and security of His devotee without being asked. Kṛṣṇa promises in  Bhagavad-gītā  (9.22):