Sutra:
143. rakshagathva bOgyathvangaL iraNdum thirumEniyil thORRum.

Meaning:
The qualities of protection and enjoyment (which are seen as the tool and use of the divine weapons and the crown) can be seen by us in the divine form of the Lord (that was talked about in the previous sutras).

Sri PBA Swami's Sarartha Deepikai:
For those who seek Him as the means and the end, the reason behind the means is the quality of protecting and the reason behind the end is the quality of enjoyment. These are both sen in the divine form of Sri Ranganatha. Protection is seen in the divine weapons that assist in it and in the divine crown that stands for it. These as well as the abhaya hasta, the divine smile and the divine feet each stand as the height of beauty and as such show enjoyment.

Thus, the meanings of the nArAyaNa term have been explained.