evidence: Limbang is a border town and the capital of Limbang District in the Limbang Division of northern Sarawak, East Malaysia, on the island of Borneo. This district area is 3,978.10 square kilometres,[2] and population (year 2020 census) was 56,900. It is located on the banks of the Limbang River (Sungai Limbang in Malay), between the two halves of Brunei. [...] Sultan Hashim was again pressured by Charles Brooke and a new British Consul of Borneo Hewette, to cede both the districts, but he firmly refused, as the loss of both districts would make Brunei non-existent on the map of Borneo, resembling "a tree without branches".[5] However, Sultan Hashim persistently protested against the decision to cede Limbang until his death in 1906.[4] Sultan Hashim considered Limbang as a significant resource, supplying Brunei with food, forest produce, timber, and fisheries. Sultan Hashim also thought that "Brunei is Limbang and Limbang is Brunei". Before his death, Sultan Hashim signed a supplementary agreement (after the 1888 protectorate agreement) with the British government in 1906 to accept a Resident in Brunei to ensure the survival of the Brunei kingdom and stem further losses of the Bruneian territories.[5] [...] - ^ Clearly, Mark; Shaw, Brian (April 1992). "Limbang: a lost province of oil-rich Brunei Darussalam". Geography. 77 (2). Taylor & Francis: 178–181.