Muwatta Malik #844
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، أَنَّهُ سَمِعَ ابْنَ شِهَابٍ، يَقُولُ سَمِعْتُ بَعْضَ، عُلَمَائِنَا يَقُولُ مَا حُجِرَ الْحِجْرُ فَطَافَ النَّاسُ مِنْ وَرَائِهِ إِلاَّ إِرَادَةَ أَنْ يَسْتَوْعِبَ النَّاسُ الطَّوَافَ بِالْبَيْتِ كُلِّهِ .
Yahya related to me from Malik that he heard Ibn Shihab say that
he had heard one of the people of knowledge say that the Hijr was only
enclosed so that people would go beyond it as they were making tawaf,
and their tawaf would therefore encompass the original House.
About Muwatta Malik
This hadith is #844 from Muwatta Malik, in the Book of Hajj.