SB 6.14.38
citraketor atipritir
yatha dare prajavati
na tathanyesu sañjajñe
balam lalayato ’nvaham
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
As King Citraketu fostered his son very carefully, his affection for Queen Krtadyuti increased, but gradually he lost affection for the other wives, who had no sons.