CC Antya 20.64

pūrve aṣṭa-śloka kari’ loke śikṣā dilā
sei aṣṭa-ślokera artha āpane āsvādilā
Word for word: 
pūrve — formerly; aṣṭa-śloka kari’ — composing eight verses; loke śikṣā dilā — gave instruction to the people in general; sei — those; aṣṭa-ślokera — of the eight stanzas; artha — the meaning; āpane āsvādilā — personally tasted.
Translation: 
The Lord had formerly composed these eight verses to teach people in general. Now He personally tasted the meaning of the verses, which are called the Śikṣāṣṭaka.