Ibn Umar said “The Messenger of Allah ﷺ prohibited shighar marriage. Musaddad added in his version “I said to Nafi “What is shighar?” (It means that) a man marries the daughter of another man and gives his own daughter to him in marriage without fixing dower; and a man marries the sister of another man and gives him his sister in marriage without fixing dower.
Hadith Referenceسنن ابي داود / كتاب النكاح / 2074
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح بخاري (5112) صحيح مسلم (1415)
Abdur Rahman ibn Hurmuz al-Araj said: Al-Abbas ibn Abdullah ibn al-Abbas married his daughter to Abdur Rahman ibn al-Hakam, and Abdur Rahman married his daughter to him. And they made this (exchange) their dower. Muawiyah wrote to Marwan commanding him to separate them. He wrote in his letter: This is the shighar which the Messenger of Allah ﷺ has forbidden.
Hadith Referenceسنن ابي داود / كتاب النكاح / 2075
Hadith Gradingالألبانی:حسن | زبیر علی زئی:إسناده حسن
Hadith Takhrij« تفرد بہ أبو داود، مسند احمد (4/94)، ( تحفة الأشراف: 11429) (حسن) »