Article 21: This article states that "No person shall be deprived of his life or personal liberty except according to procedure established by law." Over the years, the Supreme Court of India has expanded the scope of personal liberty to include various fundamental rights, including the right to marry a person of one's choice.

Shamima Begum vs. State of Assam (2018): The court ruled that a woman has the right to marry a person of her choice, reinforcing that personal decisions related to marriage fall under individual autonomy and personal liberty as guaranteed by Article 21.

Hadiya's case (Shafin Jahan vs. Asokan K.M): The Supreme Court upheld the right to marry as a fundamental right under Article 21. It ruled that an adult woman is free to make decisions regarding her marriage, rejecting attempts to interfere in personal choices. The court emphasized that state or societal disapproval cannot restrict an individual’s right to marry.