Alqamah (may Allah have mercy on him) said: A question was brought to Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) about a man who married a woman without fixing a dower for her, and he died before consummating the marriage with her. He sent the questioners back several times, then said: I will give my own opinion on it; if it is correct, it is from Allah, and if it is wrong, it is from me. My opinion is that "she will receive the dower of women like her, with no reduction and no excess; she must observe the waiting period ('iddah), and she will inherit." Then Ma'qil bin Sinan al-Ashja'i (may Allah be pleased with him) stood up and said: "I testify that you have judged in this exactly as the Messenger of Allah (peace and blessings be upon him) judged in the case of Barwa' bint Washiq." She was a woman of Banu Ru'as, a clan of Banu Amir bin Sa'sa'ah. And Sufyan also adopts this view.
Hadith Referenceالمعجم الكبير للطبراني / باب الميم / 17677