Who was it that defined the boundaries of the Haram?
Question

                Who was it that defined the boundaries of the Haram?
Praise be to Allah.
	The one who 
	first defined the boundaries of the Haram was the Prophet of Allah Ibraaheem 
	(peace and blessings of Allah be upon him and upon our Prophet), by the 
	command of Allah and on the basis of what He revealed to him.

	An-Nawawi (may 
	Allah have mercy on him)said:

	Al-Azraqi and 
	others stated, with their isnaads, that Ibraaheem al-Khaleel (peace be upon 
	him) defined the boundary and set up markers for it, and Jibreel (peace be 
	upon him) showed him where to place them. Then our Prophet (blessings and 
	peace of Allah be upon him) was instructed to renew them, and they were 
	subsequently renewed by ‘Umar, then ‘Uthmaan, then Mu‘aawiyah (may Allah be 
	pleased with them all), and until the present they have remained well-known, 
	visible and clear, praise be to Allah. At the end of Kitaab Makkah, 
	al-Azraqi said: With regard to the boundary markers of the Haram that are at 
	the top of ath-Thaniyyah, whatever is in front of them is within the Haram 
	zone, and whatever is behind them is outside the Haram zone. Part of al-A‘shaash 
	is outside the Haram zone and part of it is inside the Haram zone.

	End quote from
	Sharh al-Muhadhdhab (7/463)

	It was narrated 
	from Ibn ‘Abbaas (may Allah be pleased with him) that the Messenger of Allah 
	(blessings and peace of Allah be upon him) sent Tameem ibn Asad al-Khuzaa‘i 
	to renew the boundary markers of the Haram. They had been placed by 
	Ibraaheem (peace be upon him), and Jibreel (peace be upon him) showed him 
	where to put them. Narrated by Abu Na‘eem in Ma‘rifat as-Sahaabah 
	(1/425). Its isnaad was classed as hasan by al-Haafiz Ibn Hajar (may Allah 
	have mercy on him) in al-Isaabah fi Tamyeez as-Sahaabah, in his 
	biography of Tameem ibn Asad al-Khuzaa‘i (may Allah be pleased with him) 
	(1/367)

	And Allah knows 
	best.