Hindu law defines marriage as a sacrament, a contract, and a social institution. It is considered to be a sacred union between a man and a woman, which is entered into with the intention of creating a lifelong partnership.

In order for a Hindu marriage to be valid, both parties must be Hindu, of sound mind, and of legal age. Additionally, there must be no prohibited degrees of relationship between the parties, and the marriage must be solemnized in accordance with the prescribed ceremonies.

The essential ceremonies for a Hindu marriage include Kanyadaan (giving away of the bride), Saptapadi (taking seven steps together), and Hom (sacred fire ritual). These ceremonies are considered to be essential for the marriage to be valid.

Under Hindu law, the grounds for divorce include adultery, cruelty, desertion, and other exceptional circumstances. Adultery is defined as sexual intercourse between a married person and someone other than their spouse. Cruelty includes physical or mental abuse, as well as willful neglect. Desertion is the willful abandonment of one spouse by the other for a continuous period of two years.

The process for obtaining a divorce under Hindu law involves filing a petition with the court, serving the petition on the other spouse, and attending a mandatory counseling session. The court will then consider the evidence and arguments presented by both parties and decide whether to grant the divorce.

The effects of a divorce under Hindu law include the dissolution of the marriage, the freedom of the parties to remarry, and the entitlement of the parties to maintenance. Maintenance is a financial provision that is paid by one spouse to the other spouse after the divorce.

A judicial separation is a legal process that allows a married couple to live separately while still remaining legally married. Unlike a divorce, a judicial separation does not dissolve the marriage, does not allow the parties to remarry, and does not entitle the parties to maintenance.

Restitution of conjugal rights is a legal remedy under Hindu law that allows a spouse to enforce the obligation of cohabitation against the other spouse. It is available to both the husband and the wife.

Nullity of marriage is a declaration by a court that a marriage is void from the beginning. It is available for both void and voidable marriages. A void marriage is one that is legally invalid from the beginning, while a voidable marriage is one that is valid until it is annulled by a court.

Bigamy is the offense of marrying a second time while the first marriage is still subsisting. It is a ground for divorce, a criminal offense, and a violation of Hindu law.

Polygamy is the practice of having multiple spouses at the same time. It is prohibited under Hindu law, and is a criminal offense.

Dowry is a gift given by the bride's family to the groom's family. It is a customary practice in Hindu marriages, but it is not prohibited under Hindu law.

Stridhan is the property owned by a Hindu woman. It is exempt from attachment by her husband's creditors, and it can be inherited by her children.

Under Hindu law, the father is the natural guardian of his minor children. However, the mother can also be appointed as the guardian by the court. The court can also appoint a guardian for a minor child if both parents are dead or if they are unable to act as guardians.

Adoption is a legal process by which a person takes a child as his or her own child. It can be done by a single person or a couple. The adopted child has the same rights and obligations as a biological child.