Muwatta Malik #843
Hajj
The Arabic includes the chain of narration (sanad) and the collector's commentary; the English translation shows the Prophet's words only.
وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ هِشَامِ بْنِ عُرْوَةَ، عَنْ أَبِيهِ، أَنَّ عَائِشَةَ أُمَّ الْمُؤْمِنِينَ، قَالَتْ مَا أُبَالِي أَصَلَّيْتُ فِي الْحِجْرِ أَمْ فِي الْبَيْتِ .
Yahya related to me from Malik from Hisham ibn Urwa from his
father that A'isha, umm al-muminin, said, "I do not mind whether I
pray in the Hijr or in the House." (i.e. praying in the Hijr is the
same as praying in the House).
About Muwatta Malik
This hadith is #843 from Muwatta Malik, in the Book of Hajj.