Section 3(3)(b) in The Bihar And Uttar Pradesh (Alteration Of Boundaries) Act, 1968
(b)the said authority shall have power to determine the location of the points at which the boundary pillars shall be constructed and to specify the State Government which shall be responsible for the construction and maintenance of the boundary pillars at such points according to such specifications as that authority may indicate (the pillars of the same specifications being apportioned, as far as practicable equally between the two State Governments), the decision of the said authority in regard to these matters being final;