आदिकर्मणि क्तः कर्तरि च

The word आदिकर्मणि means 'the beginning of an action' or when the action signified by the roots, is intended to be expressed merely as having been simply begun. The force of च in the sutra is to indicate that even when the beginning of an action is intended to be expressed, the क्त may be used to denote the act and the object as well. Thus प्रकृतः कटं देवदत्तः here the agent is denoted. प्रकृतः कटो देवदत्तेन; here the object is denoted. प्रकृतम् देवदत्तेन; here mere action is denoted. Similarly प्रभुक्त ओदनं देवदत्तः (agent); प्रभुक्त ओदनो देवदत्तेन (object); प्रभुक्तं देवदत्तेन (act).,