Abu Salamah bin Abd al-Rahman narrates from Sayyidah Aishah (may Allah be pleased with her) that the Messenger of Allah (peace and blessings be upon him) said: "There is no vow in disobedience, and its expiation is the expiation of an oath."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الأيمان / 20062