SB 10.85.52
ity uktva tan samadaya
indrasenena pujitau
punar dvaravatim etya
matuh putran ayacchatam
Translation:
[Sukadeva Gosvami continued:] After saying this, Lord Krsna and Lord Balarama, having been duly worshiped by Bali Maharaja, took the six sons and returned to Dvaraka, where They presented them to Their mother.