Shrimad Bhagavad Gita As It Is -Shri Shrimad A.C Bhaktivedanta Swami Prabhupada
Chapter 3: Verse-5
But if the soul is engaged in his natural function of krsna consciousness, whatever he is able to do is good for him.The Srimad-Bhägavatam affirms this:
tyaktvä sva-dharmam caranämbujam harer
“If someone takes to krsna consciousness, even though he may not follow the prescribed duties in the sästras or execute the devotional service properly, and even though he may fall down from the standard, there is no loss or evil for him. But if he carries out all the injunctions for purification in the sästras, what does it avail him if he is not krsna conscious?” So the purificatory process is necessary for reaching this point of krsna consciousness. Therefore, sannyäsa, or any purificatory process, is to help reach the ultimate goal of becoming krsna conscious, without which everything is considered a failure.