(left) and
Abbas Al-Sufri (right) in Brunei Town On 28 February 1955, Pengiran Muda Hashim became a member of the
State Council. He was exempted from paying customs duties on goods brought into Brunei for personal use, as per a new decree issued by Sultan
Omar Ali Saifuddien III on 1 March 1956. He returned to Brunei on 14 August of that same year, accompanied by
Ibrahim Mohammad Jahfar, after completing their leave in England. Followed by ob 27 August, the sultan accompanied by his family, visited near
Sapo Point, with Pengiran Muda Hashim, and other officials, where the warship honoured their arrival with
21-gun salute. Followed, be being a part of the State Financial Authority in 1957. On 14 March 1959, during the absence of the sultan, who travelled to
London to
negotiate a written constitution for Brunei, two members of the royal family, Pengiran Muda Hashim and
Pengiran Muhammad Salleh, were appointed as regents and began their duties, a role they had previously undertaken several times. Pengiran Muda Hashim travelled to
Amo on 7 August to officiate the opening of a Malay school in the village. He also officiated the opening of the
Kampong Jerudong Mosque on 14 August, representing the sultan of Brunei. Pengiran Muda Hashim was among the dignitaries who attended the signing of Brunei's
written constitution and the new agreement with the United Kingdom at the
Lapau on 29 September 1959. The following month, he was appointed as a member of both the Islamic Religious Council and the
Adat Istiadat Council, which were established to oversee matters related to religion, customs, and the state court. He was among the 20 individuals appointed, with Pengiran Muhammad Salleh as president of the council. Additionally, he became one of the inaugural
ex-officio members of the newly established
Legislative Council of Brunei (LegCo). On 23 April 1960, Pengiran Muda Hashim was appointed as one of the seven members of the Regency Council. In the following month, he was also appointed as a member of the Regency Council, alongside wazirs, ministers, and council members, to carry out the sultan's duties during his holiday in Malaya. On 20 January 1961, he addressed the public to encourage peace and unity, referring to an incident in
Seria involving
Malayan police and local residents, where four officers were detained for allegedly injuring two
Bruneian Malays at the Roxana cinema. He urged the public to remain calm and assured that the matter had been handed over to the courts for resolution. While the sultan was in Malaya, Pengiran Muda Hashim was among the people appointed to serve as acting sultan together in May. On 31 July, he officially opened the
Bengkurong Malay School. He attended the instalment ceremony on 14 August in
Istana Darul Hana, where Prince
Hassanal Bolkiah was officially declared as the new (Crown Prince). He was also among the distinguished guests who witnessed
Brunei Malay Regiment's first-ever military parade at
Padang Besar on 9 November, alongside other state officials. Following the
Brunei revolt in December, Pengiran Muda Hashim, alongside other high-ranking officials, reaffirmed their unwavering loyalty to the sultan. They vowed to sacrifice everything to combat
treason and strongly condemned the rebellion led by
A. M. Azahari and his followers, firmly rejecting Azahari's false claims that the uprising had the support of the
Bruneian people. On 10 June 1963, Pengiran Muda Hashim inaugurated the Bendahara Mosque on Baru-Baru Island. On 2 August, he officially laid the foundation stone for the
Brunei Malay Teachers Association's building on the
banks of the
Kianggeh River at Jalan Kianggeh. Later in September, in the boat race held in Tutong to celebrate the sultan's birthday, he led a team of three members, finishing in fourth place. Pengiran Muda Hashim laid the foundation stone for the Utama Mohammad Salleh Mosque in Temburong on 17 April 1965. Later that year, in September, his residence hosted various ceremonies and celebrations leading up to the royal wedding of his son, Pengiran Muda Abdul Rahman, and
Princess Masna. On 16 September, he, along with his son and their entourage, departed for
Istana Darussalam for the akad nikah ceremony, accompanied by the royal regalia. In December, on 20 December, acting as the deputy sultan, Pengiran Muda Hashim delivered the royal address from the throne at the Dewan Kemasyarakatan during the opening of the LegCo meeting. On 16 April 1967, he traveled to
Kuala Lumpur with
Pengiran Mohammad to represent the sultan and the
Brunei government at the funeral of
Tuanku Munawir, the
Yang di-Pertuan Besar of Negeri Sembilan. Pengiran Muda Hashim played a key role in the coronation ceremonies of Sultan Hassanal Bolkiah on 1 August 1968, as he read the proclamation of the coronation. Pengiran Muda Hashim relinquished his noble duties as on 15 August 1977. == Death ==