In Hindu tradition, marriage between individuals belonging to different gotras within the same caste, such as Brahmin, is generally not allowed as it is considered to be against the rules of endogamy. The concept of gotra is based on the belief that individuals within the same gotra are believed to be descended from a common ancestor, and therefore considered to be siblings. Therefore, a marriage between individuals from the Sandilya and Kashyap gotras, both belonging to the Brahmin caste, would not be traditionally permissible.
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Is marriage between brahmin sandilya gotra and brahmin kashyap gotra possible?-Well, in traditional Hindu beliefs and customs, marriage between certain gotras is often restricted. But these rules and restrictions can vary depending on different regions and families. Nowadays, many people might not strictly follow these gotra-based restrictions. However, it's a complex and sensitive topic. Some might still consider it inappropriate, while others might be more open-minded. So, it's hard to give a definite yes or no. It really depends on the individuals and their families' beliefs and values.