Introduction . In the first winter session of 17th lok sabha, the Home minister of India, amit shah moved a bill, called citizenship amendment bill (CAB), which sought to amend some provision of the citizenship act 1955. This bill required to grant citizenship those people who were persecuted in three neighboring countries Afghanistan, Pakistan and bangladesh on the religious basis. It was passed hurriedly in both houses of Parliament among ruckus and not long debates were held. It became contentious since its introduction in parliament, because this amendment provided only six communities that is Hindu, Sikhs, Christian, Buddha, jain and parsis and excluded Muslim community. Government claimed in parliament that all three countries are Muslim dominated and where minorities are being persecuted on religious basis. So to safeguard the rights of these communities, the need of this amendment was arisen. First time , in the country religious base amendment came