مُسْنَدُ أَحْمَدَ
Musnad Ahmad 3093
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated from Ibn ‘Abbas (رضي الله عنه) that He said: Duba'ah bint az-Zubair bin ‘Abdul-Muttalib came to the Messenger of Allah (ﷺ) and said: I am a heavy woman (walking is difficult for me) and I want to do Hajj. How should I enter ihram? He said: "Enter ihram and stipulate: ‘My existing ihram will be where You prevent me (from continuing).” And she managed to do Hajj.
Musnad Ahmad 3117Its isnad is saheeh]