mānuṣaṁ deham āśritaḥ
bhajate tādṛśīḥ krīḍā
yāḥ śrutvā tat-paro bhavet
anugrahāya-for showing favor; bhaktānām-to the devotees; mānuṣam-humanlike; deham-body; āśritaḥ-accepting; bhajate-He enjoys; tādṛśīḥ-such; krīḍāḥ-pastimes; yāḥ-which; śrutvā-having heard; tat-paraḥ-fully intent upon Him; bhavet-one must become.
"Kṛṣṇa manifests His eternal humanlike form and performs His pastimes to show mercy to the devotees. Having heard such pastimes, one should engage in service to Him."
The saying that the human form of life is the best position for devotional service has its special significance because only in this form can a living entity revive his eternal relationship with the Supreme Personality of Godhead. The human form is considered the highest state in the cycle of the species of life in the material world. If one takes advantage of this highest kind of material form, one can regain his position of devotional service to the Lord.