SB 9.6.52
ekas tapasvy aham athambhasi matsya-sangat
pañcasad asam uta pañca-sahasra-sargah
nantam vrajamy ubhaya-krtya-manorathanam
maya-gunair hrta-matir visaye ’rtha-bhavah
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
In the beginning I was alone and engaged in performing the austerities of mystic yoga, but later, because of the association of fish engaged in sex, I desired to marry. Then I became the husband of fifty wives, and in each of them I begot one hundred sons, and thus my family increased to five thousand members. By the influence of the modes of material nature, I became fallen and thought that I would be happy in material life. Thus there is no end to my material desires for enjoyment, in this life and the next.