‘Nemo iudex in causa sua’ this maxim means that ‘no person should be a judge in his own cause’ and it is a cardinal principle of natural justice. The Arbitration and Conciliation (Amendment) Act, 2015 (for short “2015 Amendment”) and the Arbitration and Conciliation (Amendment) Act, 2019 (for short “2019 Amendment”) grant the liberty to the parties to appoint an arbitrator mutually.