The affix yat (yaṃ) is also added in the sense of 'able to effect that' after the word yoga,
Thus योगाय प्रभवति = योग्यः or यौगिकः ॥,
Adhyāya 5 · Pāda 1 · Rule 102
The affix yat (yaṃ) is also added in the sense of 'able to effect that' after the word yoga,
Thus योगाय प्रभवति = योग्यः or यौगिकः ॥,