Unload it and set it free, for it is cursed

‘Imrān ibn Husayn (may Allah be pleased with him) reported that a woman from the Ansār was riding her she-camel. She became displeased with it and started to curse it. Hearing her curse of the she-camel, the Prophet (may Allah's peace and blessings be upon him) ordered that it should be unloaded of her luggage and set free, for it was cursed. ‘Imrān (may Allah be pleased with him) added: I saw that she-camel walking amongst the people and no one showing any concern for it.

This is because the Prophet (may Allah's peace and blessings be upon him) ordered that it should be released.