Manu 2.3
संकल्पमूलः कामो वै यज्ञाः संकल्पसंभवाः । व्रतानि यमधर्माश् च सर्वे संकल्पजाः स्मृताः ॥
saṃkalpa.mūlaḥ kāmo vai yajñāḥ saṃkalpa.saṃbhavāḥ | vratāni yamadharmāś ca sarve saṃkalpajāḥ smṛtāḥ ||
Devanagari rendered by HREEM from the edition's roman (IAST) text; the IAST is the edition's own.
The desire (for rewards), indeed, has its root in the conception that an act can yield them, and in consequence of (that) conception sacrifices are performed; vows and the laws prescribing restraints are all stated to be kept through the idea that they will bear fruit.
Translated by Georg BühlerFrom an unproofread scan of the printed edition; spelling and line breaks may carry OCR errors.