Ayesha reported,

We set out with the Messenger of Allah ﷺ just before the appearance of the new moon of Dhul-Hijjah. When we reached Dhul-Hulayfa, he said, "Whoever wishes to enter the state of ihram for Hajj may do so, and whoever wishes to enter ihram for Umrah may do so."Musa said in the narration of Wahib, "Were it not that I have brought a sacrificial animal with me, I would have entered ihram for Umrah."And in the narration of Hammad bin Salama he said, "As for me, I will enter ihram for Hajj, for I have the sacrificial animal with me."Then the narrators agreed in their accounts. She said, I was among those who entered ihram for Umrah. While we were on part of the journey, my menstrual period began, and the Messenger of Allah ﷺ came in to me while I was weeping.He asked, "What is making you cry?"I replied, "I wish I had not set out this year!"He said, "Set aside your Umrah, undo your hair, and comb it."Musa added, "And enter ihram for Hajj."Sulayman said, "And do what the Muslims do during their Hajj."When it was the night of departure, the Messenger of Allah ﷺ ordered Abdul-Rahman to take her to al-Tanim.Musa added, So she entered ihram for an Umrah in place of her original Umrah, performed tawaf around the House, and Allah completed her Umrah and her Hajj.

Azami 4911

Sahih

عن عائشة، أنها قالت

خرجنا مع رسول الله ﷺ موافين هلال ذي الحجة، فلما كان بذي الحليفة، قال: من شاء أن يهل بحج فليهل، ومن شاء أن يهل بعمرة فليهل بعمرة. قال موسى في حديث وهيب: فإني لولا أني أهديت لأهللت بعمرة. وقال في حديث حماد بن سلمة: وأما أنا فأهل بالحج فإن معي الهدي. ثم اتفقوا فكنت فيمن أهل بعمرة فلما كان في بعض الطريق حضت، فدخل علي رسول الله ﷺ وأنا أبكي. فقال: ما يبكيك؟ قلت: وددت أني لم أكن خرجت العام! قال: ارفضي عمرتك وانقضي رأسك وامتشطي. قال موسى: وأهلي بالحج. وقال سليمان: واصنعي ما يصنع المسلمون في حجهم. فلما كان ليلة الصدر أمر يعني رسول الله ﷺ عبد الرحمن فذهب بها إلى التنعيم. زاد موسى: فأهلت بعمرة مكان عمرتها وطافت بالبيت فقضى الله عمرتها وحجها.

الأعظمي 4911صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Hajj
Chapter
Description of the Hajj of the Prophet ﷺ as narrated by Jabir and others, and the rulings mentioned therein
Section
Choosing by the Prophet ﷺ at Dhul-Hulayfa between ifrad or tamattu for one who did not bring a sacrificial animal
Numbering
Jami al-Kamil 4911 (2nd edition)
Azami 4911