Śrīmad-Bhāgavatam · Text 5.18.21
Who is speaking and story frame
या तस्य ते पादसरोरुहार्हणं
निकामयेत्साखिलकामलम्पटा ।
तदेव रासीप्सितमीप्सितोऽर्चितो
यद्भग्नयाच्ञा भगवन् प्रतप्यते ॥ २१ ॥
yā tasya te pāda-saroruhārhaṇaṁ
nikāmayet sākhila-kāma-lampaṭā
tad eva rāsīpsitam īpsito ’rcito
yad-bhagna-yācñā bhagavan pratapyate
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 broken-hearted and laments. Therefore one need not worship Your lotus feet for some material benefit.
Read Śrīla Prabhupāda's purport on Vedabase.io