Muwatta Malik 801

وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ يَحْيَى بْنِ سَعِيدٍ، أَنَّهُ بَلَغَهُ عَنْ عَائِشَةَ، زَوْجِ النَّبِيِّ صلى الله عليه وسلم أَنَّهَا كَانَتْ تَقُولُ الْمُحْرِمُ لاَ يُحِلُّهُ إِلاَّ الْبَيْتُ ‏.‏

Yahya related to me from Malik from Yahya ibn Said that he had heard that A'isha, the wife of the Prophet, may Allah bless him and grant him peace, used to say, "Only the House frees a person in ihram from ihram

Reference

Muwatta Malik 801

In-book

Book 20, Hadith 97