In which of the following cases was a strike by lawyers held to be illegal and unethical ?

In Dr. B.L. Wadehra v. State (NCT of Delhi), decided in April 2000, the Delhi High Court held that a strike or boycott of courts by lawyers is illegal and unethical, because it obstructs the administration of justice and breaks the advocate's duty to the client and the court. The Supreme Court later took the same view in Ex-Capt. Harish Uppal v. Union of India (2003). M.C. Mehta is known for environmental cases, Lily Thomas for bigamy by conversion and Indira Sawhney for reservation.