And as a result I took an oath

Q 2: what is the Kaffarah (expiation) for declaring something that is Halal (lawful) to be Haram (prohibited)?

(Part No. 23; Page No. 174) A: If a person declares something that is Halal to be Haram for himself, other than his wife, it does not become Haram. He should offer Kaffarah for an oath for declaring something Halal as Haram. Allah (Exalted be He) says: O Prophet! Why do you forbid (for yourself) that which Allâh has allowed to you until His Saying: Allâh has already ordained for you (O men) the absolution from your oaths. It was related by Al-Bukhari on the authority of Ibn `Abbas (may Allah be pleased with him) that declaring something Halal as Haram is an oath that should be expiated for. Ibn `Abbas said, "Allah says: Indeed in the Messenger of Allâh (Muhammad صلى الله عليه وسلم) you have a good example to follow May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.