The phrase "for your reference" is used to indicate that the information being provided is intended to be used as a point of consultation or source of information. When someone says or writes "for your reference," they are suggesting that the recipient may find the information helpful or relevant in some way, but it is not necessarily required for immediate action.
It is commonly used in various contexts, such as in emails, reports, documents, or conversations, when sharing additional materials, sources, or data that may provide background information, support a claim, or offer further insights. By using this phrase, the person is not demanding immediate attention but is offering the information for the recipient's benefit if they choose to explore it further.