The affix iṣṇuc in the sense of 'the agent having such a habit etc.' comes in the chandas (Vedas) after the verb bhū 'to be' etc.,
Thus भविष्णुः 'becoming'.
The yoga-vibhaga or the division of this sutra from the last, with which it could well have been read, is for the sake of the subsequent sutras.
The word 'also' indicates the existence of other verbs not included in the above two sutras; as, भ्राजिष्णुना लोहितचन्दनेन ।,