No, in Islam, it is not permissible for a brother and sister to get married. Islam strictly prohibits marriage between siblings, including half-siblings, whether they share the same mother or father.
The prohibition is based on several Islamic principles and teachings:
The Quranic Injunction: The Quran explicitly prohibits marriage between certain close relatives, and this includes siblings. In Surah An-Nisa (4:23-24), Allah outlines the permissible and forbidden marriage relationships, and siblings are among those who are forbidden to marry each other.
Avoiding Incestuous Relationships: Islam aims to promote family values and healthy relationships. Marrying close family members like siblings can lead to harmful consequences, both physically and psychologically. It also helps in preserving family bonds and maintaining a healthy society.
Following the Example of the Prophet: The Prophet Muhammad (peace be upon him) set the example for Muslims to follow in all aspects of life, including marriage. He never allowed or practiced marriage between siblings.
Universal Consensus: The prohibition on sibling marriage is widely accepted among Islamic scholars and scholars of various religious denominations.
In Islam, maintaining proper family relations, love, and care for siblings are highly encouraged, but marriage between them is strictly forbidden. The goal is to foster a harmonious society based on ethical and moral values while ensuring the well-being of individuals and the community as a whole.