Musannaf Ibn Abi Shaybah

Hazrat Ibn Abbas (may Allah be pleased with both of them) was asked: If a marriage is made conditional upon the stipulation that if the husband gives the dowry by such-and-such day, then it is valid, otherwise the marriage will not take place. He replied: There is no harm in this.

Hazrat Zuhri says that doing so is permissible. This act will be considered under the ruling of khula. Hasan used to say that the marriage is valid and the condition is invalid.

Ibrahim says that in marriage, any condition imposed other than divorce nullifies the marriage.