Narrated Ibn 'Umar : Allah's Apostle forbade Ash-Shighar, which means that somebody marries his daughter to somebody else, and the latter marries his daughter to the former without paying Mahr.
— Sahih Bukhari, Volume 7, Book 62: Wedlock, Marriage (Nikaah), Hadith #47
Narrated Ibn 'Umar : Allah's Apostle forbade Ash-Shighar, which means that somebody marries his daughter to somebody else, and the latter marries his daughter to the former without paying Mahr.
This hadith is from the book of Wedlock, Marriage (Nikaah) in Sahih Bukhari, compiled by Imam al-Bukhari. It is hadith number 47 in book 62 of volume 7.
This hadith is referenced in the following topics: Dowry, Eligibility of Marriage.
