In which of the following cases the Supreme Court observed that, "if a witness becomes hostile to…

The quoted warning appears in Sanjeev Nanda, where the Supreme Court discussed witnesses turning hostile under inducement or pressure. It emphasised active judicial truth-finding and careful scrutiny of the usable testimony; a hostile label does not erase every part of a witness’s evidence.

Current law: BSA section 157 preserves court-permitted cross-examination of one’s own witness and the ability to rely on creditworthy parts; section 168 supplies the corresponding judicial questioning power.