“ Any document or other thing envisaged under the aforesaid provision can be ordered to be produced on finding that the same is 'necessary or desirable for the purpose of investigation, inquiry, trial or other proceedings under the Code'. The first and foremost requirement of the section is about the document being necessary or desirable. The necessity or desirability would have to be seen with reference to the stage when a prayer is made for the production. If any document is necessary or desirable for the defence of the accused, the question of invoking Section 91 at the initial stage of framing of a charge would not arise since defence of the accused is not relevant at that stage. When the section refers to investigation, inquiry, trial or other proceedings, it is to be borne in mind that under the section a police officer may move the Court for summoning and production of a document as may be necessary at any of the stages mentioned in the section. In so far as the accused is concerned, his entitlement to seek order under Section 91 would ordinarily not come till the stage of defence. When the section talks of the document being necessary and desirable, it is implicit that necessity and desirability is to be examined considering the stage when such a
