Hadith.4839 - In the narration of Al-Sakuni, he said that Imam Ali ibn Abi Talib عليه السلام was asked about a man who both swore an oath (ilaʾ) and declared ẓihar (a form of divorce by comparison) against his wife in a single statement.
Imam عليه السلام said: "He is obligated to offer only one expiation."