I refer to https://sso.agc.gov.sg/Act/CONS1963?ProvIds=pr1-,pr4-,pr139- (see below)

Commonwealth citizenship

139.—(1)  In accordance with the position of Singapore within the Commonwealth, every person who is a citizen of Singapore enjoys by virtue of that citizenship the status of a Commonwealth citizen in common with the citizens of other Commonwealth countries.

(2)  Any existing law shall, except so far as Parliament otherwise provides, apply in relation to a citizen of the Republic of Ireland who is not also a Commonwealth citizen as it applies in relation to a Commonwealth citizen.

I refer to https://thecommonwealth.org/declaration-commonwealth-principles-1971 (see below)

Declaration of Commonwealth Principles

Singapore, 1971

The Commonwealth of Nations is a voluntary association of independent sovereign states, each responsible for its own policies, consulting and co-operating in the common interests of their peoples and in the promotion of international understanding and world peace.

Members of the Commonwealth come from territories in the six continents and five oceans, include peoples of different races, languages and religions, and display every stage of economic development from poor developing nations to wealthy industrialised nations. They encompass a rich variety of cultures, traditions and institutions.

Membership of the Commonwealth is compatible with the freedom of member governments to be nonaligned or to belong to any other grouping, association or alliance. Within this diversity all members of the Commonwealth hold certain principles in common. It is by pursuing these principles that the Commonwealth can continue to influence international society for the benefit of mankind.

We believe that international peace and order are essential to the security and prosperity of mankind; we therefore support the United Nations and seek to strengthen its influence for peace in the world, and its efforts to remove the causes of tension between nations.

We believe in the liberty of the individual, in equal rights for all citizens regardless of race, colour, creed or political belief, and in their inalienable right to participate by means of free and democratic political processes in framing the society in which they live. We therefore strive to promote in each of our countries those representative institutions and guarantees for personal freedom under the law that are our common heritage.

We recognise racial prejudice as a dangerous sickness threatening the healthy development of the human race and racial discrimination as an unmitigated evil of society. Each of us will vigorously combat this evil within our own nation. No country will afford to regimes which practice racial discrimination assistance which in its own judgment directly contributes to the pursuit or consolidation of this evil policy.

We oppose all forms of colonial domination and racial oppression and are committed to the principles of human dignity and equality. We will therefore use all our efforts to foster human equality and dignity everywhere, and to further the principles of self-determination and non-racialism.

We believe that the wide disparities in wealth now existing between different sections of mankind are too great to be tolerated; they also create world tensions; our aim is their progressive removal. We therefore seek to use our efforts to overcome poverty, ignorance and disease, in raising standards of life and achieving a more equitable international society.

To this end our aim is to achieve the freest possible flow of international trade on terms fair and equitable to all, taking into account the special requirements of the developing countries, and to encourage the flow of adequate resources, including governmental and private resources, to the developing countries, bearing in mind the importance of doing this in a true spirit of partnership and of establishing for this purpose in the developing countries conditions which are conducive to sustained investment and growth.

We believe that international co-operation is essential to remove the causes of war, promote tolerance, combat injustice, and secure development among the peoples of the world; we are convinced that the Commonwealth is one of the most fruitful associations for these purposes.

In pursuing these principles the members of the Commonwealth believe that they can provide a constructive example of the multi-national approach which is vital to peace and progress in the modern world. The association is based on consultation, discussion and co-operation.

In rejecting coercion as an instrument of policy they recognise that the security of each member state from external aggression is a matter of concern to all members. It provides many channels for continuing exchanges of knowledge and views on professional, cultural, economic, legal and political issues among the member states.

These relationships we intend to foster and extend, for we believe that our multi-national association can expand human understanding and understanding among nations, assist in the elimination of discrimination based on differences of race, colour or creed, maintain and strengthen personal liberty, contribute to the enrichment of life for all, and provide a powerful influence for peace among nations.

Issued at the Commonwealth Heads of Government Meeting, Singapore, 14-22 January 1971.

*****

I, Cyrus Adam, recognize racial prejudice as a dangerous sickness threatening the healthy development of the human race, and racial discrimination as an unmitigated evil in society. I, Cyrus Adam, will vigorously combat this evil within my own nation. I, Cyrus Adam, will not afford assistance to regimes which practice racial discrimination if I judge that it directly contributes to the pursuit or consolidation of this evil policy.

I, Cyrus Adam, oppose all forms of colonial domination and racial oppression and am committed to the principles of human dignity and equality. I, Cyrus Adam, will therefore use all my efforts to foster human equality and dignity everywhere, and to further the principles of self-determination and non-racialism.

I refer to https://sso.agc.gov.sg/Act/CONS1963?ProvIds=pr1-,pr4-,pr152- (see below)

Minorities and special position of Malays

152.—(1)  It shall be the responsibility of the Government constantly to care for the interests of the racial and religious minorities in Singapore.

(2)  The Government shall exercise its functions in such manner as to recognise the special position of the Malays, who are the indigenous people of Singapore, and accordingly it shall be the responsibility of the Government to protect, safeguard, support, foster and promote their political, educational, religious, economic, social and cultural interests and the Malay language.