مُسْنَدُ أَحْمَدَ
Musnad Ahmad 2131
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 asked the Prophet (ﷺ) saying that his sister had vowed to walk to the Ka'bah, and that she was too weak, The Prophet (ﷺ) said: "Allah has no need of your sister's vow; let her ride and offer a sacrifice."
Musnad Ahmad 2134lts isnad is saheeh]