SB 10.9.22
krsnas tu grha-krtyesu
vyagrayam matari prabhuh
adraksid arjunau purvam
guhyakau dhanadatmajau
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
While mother Yasoda was very busy with household affairs, the Supreme Lord, Krsna, observed twin trees known as yamala-arjuna, which in a former millennium had been the demigod sons of Kuvera.