Ambedkar saw control of women’s sexuality as a method of caste reproduction.

Evidence

Ambedkar argues in “Castes in India”, his 1916 essay, that women are the gateways of the caste system and that control over them through child marriages, enforced widowhood and sati (being burnt on a dead husband’s pyre) are methods to keep a check on women’s sexuality. — Ambedkar, B R, Annihilation of Caste_ The Annotated…, 491