Mudgalapurana 8.6.33

8.6.33

tathā siddhiśca buddhiśca gaṇeśo daityanāyaka |
ekarūpo na sandeho yogastenāyamucyate ||

so too are Siddhi, Buddhi, and Gaṇeśa, O leader of Daityas; / they are of one form, there is no doubt; therefore this is called yoga.