Sahih al-Bukhari 5139
صحيح البخاري#5139SahihNarrated `Abdur-Rahman bin Yazid and Majammi bin Yazid:The same ,Hadith above: A man called Khidam married a daughter of his (to somebody) against her consent. 'If you fear that you shall not be able to deal justly with the orphan girls then marry (other) women of your choice.' (4.3) And if somebody says to the guardian (of a woman), "Marry me to so-and-so," and the guardian remained silent or said to him, "What have you got?" And the other said, "I have so much and so much (Mahr)," or kept quiet, and then the guardian said, "I have married her to you," then the marriage is valid (legal). This narration was told by Sahl on the authority of the Prophet
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 67:75