As per case facts, the dispute involved the succession to the Sajjadanashin office of Hazarath Mardane-e-Gaib Dargah. The original Sajjadanashin nominated his grandson (respondent no. 1) as successor through a ... Khilafatnama. The appellant, the youngest son, asserted a rival claim based on other documents. The lower courts consistently ruled in favor of the grandson, affirming the hereditary nature of the office and the validity of his nomination. The appellant then challenged these concurrent findings, alleging interpolation in the nomination document and emphasizing his own long-standing management. The question arose whether the High Court was justified in dismissing the Regular Second Appeals, contending that no substantial question of law had arisen, particularly concerning the concurrent findings regarding the hereditary nature of the Sajjadanashin office and the validity of the nomination. Finally, the Supreme Court dismissed the appeals, finding no merit in the appellant's contentions. The Court upheld the lower courts' concurrent findings that respondent no. 1 was validly nominated and lawfully succeeded to the Sajjadanashin office, rejecting the appellant's claims of interpolation and the evidentiary value of his documents. It emphasized that mere suspicion cannot displace a duly proved document and that the burden of proving forgery lies with the party alleging it.