SB 9.23.32
tasya patni-sahasranam
dasanam sumaha-yasah
dasa-laksa-sahasrani
putranam tasv ajijanat
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
The famous Sasabindu had ten thousand wives, and by each he begot a lakh of sons. Therefore the number of his sons was ten thousand lakhs.