SB 6.14.11
tasya bharya-sahasranam
sahasrani dasabhavan
santanikas capi nrpo
na lebhe tasu santatim
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
This Citraketu had ten million wives, but although he was capable of producing children, he did not receive a child from any of them. By chance, all the wives were barren.