What is the ruling on someone who utters "By Ali, it is forbidden for me" (عليَّ الحرام) while angry, and is expiation required if he did not intend anything by this utterance?

If you did not receive the transfer, then there is no breaking of an oath upon you, and nothing is entailed. However, if you did receive it, then regarding your statement "علي الحرام" (upon me is the unlawful/forbidden), there is a difference of opinion among scholars: some consider it an idle utterance that entails nothing, some consider it an oath for which expiation is required, and some see in it the possibility of ẓihār (a type of divorce pronouncement). The most preponderant opinion is that it is an oath, and expiation for an oath is entailed. The lawful oath is to swear by Allah the Almighty.