CC Ādi 4.5

caturtha ślokera artha ei kaila sāra
prema-nāma pracārite ei avatāra
Word for word: 
caturtha — fourth; ślokera — of the verse; artha — the meaning; ei — this; kaila — gave; sāra — essence; prema — love of Godhead; nāma — the holy name; pracārite — to propagate; ei — this; avatāra — incarnation.
Translation: 
I have given the essential meaning of the fourth verse: this incarnation [Śrī Caitanya Mahāprabhu] descends to propagate the chanting of the holy name and spread love of God.