Section 670(a) in Police Regulations, Bengal , 1943
(a)If any person on whose application additional police have been deputed under section 13 of the Police Act, 1861, wishes them to be withdrawn before the expiry of the term fixed when they were deputed, they shall, subject to the proviso to that section, continue to be at his charge until the expiry of such term or until a reasonable time has elapsed for them to be recalled to headquarters and for extra men to be discharged.