Sayyiduna Uqbah bin Amir (may Allah be pleased with him) narrates that he asked the Noble Prophet (peace and blessings be upon him) about his sister, who had vowed to walk to the Ka'bah. The Prophet (peace and blessings be upon him) said: Allah is independent of your sister’s vow; she should ride and slaughter a camel. This narration has also been reported by Khalid Hadhdha from Ikrimah, but without the mention of slaughtering a camel.