Ayesha reported,

I asked the Messenger of Allah ﷺ, "Is the Hijr part of the House?"He answered, "Yes."I asked, "Then why did they not include it within the House?"He replied, "Your people ran short of funds."I asked, "And why is its door raised so high?"He said, "Your people did that so they could admit whomever they wished and turn away whomever they wished. Were it not that your people are still close to the days of ignorance, and I fear their hearts would object, I would have considered including the Hijr within the House and bringing its door down to the ground."

Azami 4992

Sahih

عن عائشة قالت

سألت رسول الله ﷺ عن الجدر أمن البيت هو؟ قال: نعم. قلت: فلم لم يدخلوه في البيت؟ قال: إن قومك قصرت بهم النفقة. قلت: فما شأن بابه مرتفعا؟ قال: فعل ذلك قومك ليدخلوا من شاءوا ويمنعوا من شاءوا، ولولا أن قومك حديث عهدهم في الجاهلية؛ فأخاف أن تنكر قلوبهم لنظرت أن أدخل الجدر في البيت، وأن ألزق بابه بالأرض.

الأعظمي 4992صحيح
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
Hijr
Numbering
Jami al-Kamil 4992 (2nd edition)
Azami 4992