Yahya related to me from Malik from Nafi from Abdullah ibn Umar that the Messenger of Allah, may Allah bless him and grant him peace, forbade shighar, which meant one man giving his daughter in marriage to another man on the condition that the other gave his daughter to him in marriage without either of them paying the bride-price.
Muwatta Malik Book 28, Hadith 26
← Previous Hadith Malik said that a man who had committed fornication with a woman and the hadd-punishment had been applied to him for it, could marry that woman's daughter and his son could marry the woman herself if he wished. That was because he had haram relations with her, and the relations Allah had made haram were from the relations made in a halal manner or in a manner resembling marriage. Allah, the Blessed, the Exalted, said, "Do not marry the women your fathers have married. " (Sura 4 ayat 21)

Malik said, "If a man were to marry a woman in her idda-period in a halal marriage and have relations with her, it would be haram for his son to marry the woman. That is because the father married her in a halal manner, and the hadd-punishment would not have been applied to him. Any child who was born to him would be attached to him as the father. Just as it would be haram for the son to marry a woman whom his father had married in her idda-period and had relations with, so the woman's daughter would be haram for the father if he had had sexual relations with her."

Muwatta Malik Book 28, Hadith 25 Next Hadith → Yahya related to me from Malik from Abd ar-Rahman ibn al-Qasim from his father from Abd ar-Rahman and Mujamma the sons of Yazid ibn Jariya al-Ansari from Khansa bint Khidam al-Ansariya that her father gave her in marriage and she had been previously married. She disapproved of that, and went to the Messenger of Allah, may Allah bless him and grant him peace, and he revoked the marriage.

Muwatta Malik Book 28, Hadith 27