SB 10.8.47
pitarau nanvavindetam
krsnodararbhakehitam
gayanty adyapi kavayo
yal loka-samalapaham
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Although Krsna was so pleased with Vasudeva and Devaki that He descended as their son, they could not enjoy Krsna’s magnanimous childhood pastimes, which are so great that simply chanting about them vanquishes the contamination of the material world. Nanda Maharaja and Yasoda, however, enjoyed these pastimes fully, and therefore their position is always better than that of Vasudeva and Devaki.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Krsna actually took birth from the womb of Devaki, but just after His birth He was transferred to the home of mother Yasoda. Devaki could not even have Krsna suck her breast. Therefore Pariksit Maharaja was astonished. How had mother Yasoda and Nanda Maharaja become so fortunate that they enjoyed the complete childhood pastimes of Krsna, which are still glorified by saintly persons? What had they done in the past by which they were elevated to such an exalted position?