It is narrated from Sayyidah Umm Salamah (may Allah be pleased with her); she said: Sayyidah Duba'ah bint al-Zubayr (may Allah be pleased with her) came to the Prophet (peace and blessings be upon him) while she was ill, and he (peace and blessings be upon him) said to her: "Will you not set out with us on this journey of ours?" She said: "O Messenger of Allah, I am ill and I fear that my illness will hold me back." He (peace and blessings be upon him) said: "Then enter ihram with the intention of Hajj, and say: 'O Allah, I will leave ihram wherever You hold me back.'"
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 20195