At this performance of sacrifice (karmani) which is not credible (anasvase), because the result cannot be guaranteed due to many irregularities (whereas the results of bhakti are certain), you let us, whose eyes and other limbs are discolored by the smoke, drink the nectar. The genitive case here indicates accusative case. Drinking the nectar shows that the results of bhakti are directly attained. It is intoxicating (madhu) honey (asavam) since it gives us no experience of happiness and distress which is present in everything else and since it gives us the experience of the sweetness of the Lord.