مُسْنَدُ أَحْمَدَ
Musnad Ahmad 2135
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated from Ibn 'Abbas (رضي الله عنه) that 'Uqbah bin ‘Amir came to the Prophet (ﷺ) and said that his sister had vowed to walk to the Ka'bah. He said: “Tell your sister to ride, and to offer a sacrifice."
Musnad Ahmad 2139Its isnad is saheeh]