Dato' Muhammad bin Haji Abdullah was proclaimed as the 15th Undang Luak Johol by Dato Jenang and Buapak Yang Enam Luak Johol on 27 March 2016, carrying the title Y.T.M Dato' Johan Pahlawan Lela Perkasa Sitiawan ("Y.T.M Dato' Muhammed").

After graduating from UiTM, Y.T.M Dato' Muhammed worked as a temporary teacher teaching English and Physical Education at three schools. Y.T.M Dato' Muhammed later left the teaching profession and became an Insurance Officer with Takaful, Bank Islam Malaysia Berhad. Shortly after that, Y.T.M Dato' Muhammed ventured into business and became a Director and Chairman of several companies.

Y.T.M Dato' Muhammed is also a community activist, actively engaging in charitable work. Among the voluntary positions are the following:-
(1) Chairman of the Kebajikan Dato'-Dato' Adat Johol 
(2) Chairman of the Tahfiz Masjid Tanggai
(3) Vice Chairman of the National Anti-Drug Association Negeri Sembilan 
(4) Penaung, Pertubuhan Rakan Pembimbing dan Motivasi Al Ghoniah (Pusat Tahfiz)
(4) Penaung, Pertubuhan Kebajikan Anak-anak Suku Mungkal Johol Negeri Sembilan (Mungkajoho)
(5) Penaung, Yayasan Pembangunan Masyarakat Malaysia

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