´It was narrated from Ibn Mas'ud, that he was asked about a man who married a woman, but did not name a Mahr or consummate the marriage before he died. Ibn Mas'ud said:` "She should have a Mahr like that of women like her, no less and no more; she has to observe the 'Iddah, and she is entitled to inherit." Ma'qil bin Sinan Al-Ashja'i stood up and said: "The Messenger of Allah passed a similar judgment among us concerning Birwa' bint Washiq." And Ibn Masud rejoiced at that.
Explanation & Benefits
Hafiz Muhammad Ameen
Despite consummation (sexual intercourse) not having taken place, she will be considered a complete wife because the marriage contract (nikah) has been established. The absence of a specified dower (mahr) is not contrary to the validity of the marriage; however, the negation of the dower itself should not occur. (For further details, see Hadith: 3356)
Source: Sunan Nasa'i: Translation and Benefits by Shaykh Hafiz Muhammad Amin Hafizullah, Page: 3554