Hari Sauri 
        I don't know if there is an official interpretation. Some leaders
have slightly differing views but the best explanation I have seen is the
purport to SB 10.88.8:

	"Devotees of the Supreme Lord experience both happiness and
distress—not as consequences of material work but as incidental effects of
their loving reciprocation with the Lord. Srila Rupa Gosvami, in Sri
Bhakti-rasamrta-sindhu, his definitive treatise on the process of devotional
service, explains how a Vaisnava is relieved of all karmic reactions,
including those that have not yet begun to manifest (aprarabdha), those that
are just about to manifest (kuta), those that are barely manifesting (bija)
and those that have manifested fully (prarabdha). As a lotus gradually loses
its many petals, so a person who takes shelter of devotional service has all
his karmic reactions destroyed.

	"That devotional service to Lord Krsna eradicates all karmic
reactions is confirmed in this passage of the Gopäla-täpané sruti (Parva
15): “Devotional service is the process of worshiping the Supreme Lord. It
consists of fixing the mind upon Him by becoming disinterested in all
material designations, both in this life and the next. It results in the
dissolution of all karma.” While it is certainly true that those who
practice devotional service remain in material bodies and apparently
material situations for some time, this is simply an expression of the
inconceivable mercy of the Lord, who bestows the fruits of devotion only
when it has become pure. In every stage of devotion, however, the Lord
watches over His devotee and sees to the gradual elimination of his karma.
Thus despite the fact that the happiness and distress devotees experience
resemble ordinary karmic reactions, they are in fact given by the Lord
Himself. As the Bhagavatam (10.87.40) states, bhavad-uttha-subhasubhayoh: A
mature devotee recognizes the superficially good and bad conditions he
encounters as signs of the direct guidance of his ever well-wishing Lord....

	"Although a Vaisnava’s happiness and distress are felt as pleasure
and pain, just like ordinary karmic reactions, they are different in a
significant sense. Material happiness and distress, arising from karma,
leave a subtle residue—the seed of future entanglement. Such enjoyment and
suffering tend toward degradation and increase the danger of falling into
hellish oblivion. Happiness and distress generated from the Supreme Lord’s
desires, however, leave no trace after their immediate purpose has been
served. Moreover, the Vaisnava who enjoys such reciprocation with the Lord
is in no danger of falling down into nescience...

	"The beloved devotees of the Lord do not regard as very troublesome
the suffering He imposes on them. Indeed, they find that in the end it gives
rise to unlimited pleasure, just as a stinging ointment applied by a
physician cures his patient’s infected eye. In addition, suffering helps
protect the confidentiality of devotional service by discouraging intrusions
by the faithless, and it also increases the eagerness with which the
devotees call upon the Lord to appear. If the devotees of Lord Visnu were
complacently happy all the time, He would never have a reason to appear in
this world as Krsna, Ramacandra, Nrsimha and so on...."
