Shiva Purana
स्वभावो ऽपि हि भावानां भाविनो ऽर्थस्य कारणम् ॥ न हि स्वभावो नश्यन्तमर्थं कर्तृषु साधयेत् ॥ ५६ ॥
The nature of the senses is also the cause of the future meaning of the senses. For nature does not accomplish in the doers a perishable purpose.
english translation
svabhAvo 'pi hi bhAvAnAM bhAvino 'rthasya kAraNam ॥ na hi svabhAvo nazyantamarthaM kartRSu sAdhayet ॥ 56 ॥
hk transliteration by Sanscript