Dr. Bhimrao Ambedkar, the architect of the Indian Constitution, resigned from Jawaharlal Nehru’s Cabinet in 1951 due to his differences with other members over the Hindu Code Bill. The bill aimed to reform Hindu personal law, and Ambedkar felt that its progress was being obstructed by conservatives within the government, which led to his resignation. Ambedkar's efforts to modernize and reform Hindu law were central to his vision for social justice.