كتاب الحج
Read the English translation first, with the original Arabic directly underneath.
Narrated Um Salama:
(the wife of the Prophet) I informed Allah's Messenger (about my illness). (Through other sub-narrators, Um Salama narrated that when Allah's Messenger (ﷺ) was at Mecca and had just decided to leave (Mecca) while she had not yet done Tawaf of the Ka`ba (and after listening to her). The Prophet (ﷺ) said, "When the morning prayer is established, perform the Tawaf on your camel while the people are in prayer." So she did the same and did not offer the two rak`at of Tawaf until she came out of the Mosque.
إِذَا أُقِيمَتْ صَلاَةُ الصُّبْحِ فَطُوفِي عَلَى بَعِيرِكِ، وَالنَّاسُ يُصَلُّونَ