Ata' (may Allah have mercy on him) said that Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) was asked about a woman whose husband had died while a dowry had been fixed for her, and he said: She receives both the dowry and the inheritance.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصداق / 14425