For the final short ṛ of a root, there is substituted ri before the present character a (śa) before the Passive character y and before the augment yās in the Benedictive.,
The word लिङि in the aphorism is qualified by the phrase यकारादौ सार्वधातुके ॥ A Lin affix which begins with a य and is not a Sarvadhatuka, is necessarily the augment यास् of the Benedictive. Thus श-आ द्रियते and आ घ्रियते (the व् comes by 6.4.77). यक्-क्रियते, ह्रियते ॥ लिङ्-क्रियात् and ह्रियात् ॥ This short रि debars the long री of the last. The word non-Sarvadhatuka being understood, the rule does not apply to the Potential, as बिभृयात् ॥ The यि 7.4.22 is understood here also, therefore when the Benedictive affix does not begin with य्, the rule does not apply, as कृषीष्ट, हृषीष्ट ॥,