Shiva Purana
फलानपेक्षया येषां मनो मत्प्रवणं भवेत् ॥ प्रार्थयेयुः फलं पश्चाद्भक्तास्ते ऽपि मम प्रियाः ॥ ६३ ॥
Those devotees are dearer to me whose minds are attached to me without reference to fruits but who may later on solicit for favours.
english translation
phalAnapekSayA yeSAM mano matpravaNaM bhavet ॥ prArthayeyuH phalaM pazcAdbhaktAste 'pi mama priyAH ॥ 63 ॥
hk transliteration by Sanscript