Musnad Ahmad 1206:2

'Affan narrated to us, he said: Abu 'Awanah narrated to us, he said: Ibrahim ibn Muhajir narrated to us, from Abu Bakr ibn 'Abd al-Rahman ibn al-Harith ibn Hisham, he said: The messenger of Marwan, whom he sent to Umm Ma'qil, informed me, he said: She said: Abu Ma'qil came with the Prophet, peace and blessings of Allah be upon him, performing Hajj. When Abu Ma'qil arrived, she said: Umm Ma'qil said: "You know that I have a Hajj obligation, and you have a young camel, so give it to me so that I may perform Hajj upon it." He said: So he said to her: "You know that I have already placed it in the path of Allah." She said: "Then give me the harvest of your palm trees." He said: "You know that it is the sustenance of my family." She said: "Then I will speak to the Prophet, peace and blessings of Allah be upon him, and mention it to him." He said: So they both set out walking until they entered upon him. He said: So she said to him: "O Messenger of Allah, I have a Hajj obligation, and Abu Ma'qil has a young camel." Abu Ma'qil said: "She has spoken the truth; I have placed it in the path of Allah." He said: "Give it to her so that she may perform Hajj upon it, for it is in the path of Allah." He said: When he gave her the young camel, she said: "O Messenger of Allah, I am a woman who has grown old and become ill, so is there any deed that will suffice for me in place of my Hajj?" He said: So he said: "An 'Umrah in Ramadan suffices for your Hajj."