One should not prematurely renounce his duties, because actually, it is by giving up the desire for fruits of one’s action and by working as obligated, one becomes a “true sannyasi” or a “true yogi”
Criteria of ‘perfect sannyasi’ and ‘perfect yogi’
To work unattached to fruits of one’s work
To work as he is obligated
Not he who lights no fire and performs no duty
aKarma-yoga is better than astanga-yoga because
Astanga-yoga, as a means to control mind and senses is very difficult especially in this age
Everyone in this world is working for personal self-interest (personal or extended). Sannyasis and mystic yogis are also self interested as follows:
Sannyasis – They are always seeking oneness with impersonal Brahman (desiring liberation) and they cease to perform their prescribed duties like ‘agnihotra yajnas’ etc.
Mystic yogis – They also seek some satisfaction for their personal self by aspiring for mystic perfections (siddhis)
But the criteria of perfection is “to act in Krishna consciousness and not with a view to enjoy the fruits of one’s work”
Analogy: Limbs as part and parcel of the whole are supposed to serve the whole – Similarly Krishna consciousness is the duty of all living entities
bTherefore definition of ‘perfect sannyasi’ and ‘perfect yogi’ — Those who work only for the satisfaction of Krishna without any self-interest
Conclusion: Krishna conscious devotee is the most perfect and true sannyasi and yogi
e.g. Lord Caitanya prays for devotional service as the ultimate perfection – “na dhanam na janam...”