Sayyiduna Imran bin Husayn (may Allah be pleased with him) narrates from the Prophet (peace and blessings be upon him): "There is no vow in anger, and its expiation is the expiation of an oath."
This is munqati' (broken): al-Zubayr al-Hanzali did not hear from Imran.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الأيمان / 20068