Requirement of 'reasonableness' runs like a golden thread through the entire fabric of fundamental rights is held in:

In Maneka Gandhi v. Union of India (1978), the Supreme Court held that 'reasonableness' runs like a golden thread through fundamental rights, particularly Article 21's 'procedure established by law'. This case transformed Article 21 by requiring procedures to be fair, just, and reasonable, not merely arbitrary. The golden thread metaphor is specific to this landmark judgment.