Abu Dawud

1994. Commentary: Some people say that if a person performs ‘umrah during the months of Hajj, then performing Hajj becomes obligatory upon him. However, there is no basis for this. The first three ‘umrahs of the Messenger of Allah (sallallahu alayhi wa sallam) were in Dhu al-Qa‘dah, which is one of the months of Hajj.

Hadith Commentary:
The first ‘umrah which took place from Hudaybiyyah in the month of Dhu al-Qa‘dah, its rites were not performed because the polytheists of Makkah prevented the Prophet (sallallahu alayhi wa sallam) from performing ‘umrah. However, at that time the intention (ihram) for ‘umrah was made and the sacrificial animals were also with him. Although the circumambulation (tawaf) and other rites did not take place, it was still counted as an ‘umrah.

As for the ‘umrah of Ji‘ranah, since it was performed at night, some of the noble Companions (radi Allahu anhum ajma‘in) were not aware of it, because the Prophet (sallallahu alayhi wa sallam) went to perform ‘umrah after the ‘isha prayer and returned to offer the morning prayer (fajr). Therefore, some individuals were unaware of this ‘umrah; among them was Abdullah ibn ‘Umar (radi Allahu anhu). Thus, Nafi‘ said that the Messenger of Allah (sallallahu alayhi wa sallam) did not perform ‘umrah from Ji‘ranah. If he had performed ‘umrah, it would not have remained hidden from Abdullah ibn ‘Umar (radi Allahu anhu).
(Sahih al-Bukhari, Fard al-Khums, Hadith: 3144)
It is possible that he was absent at that time or that he forgot.
And Allah knows best.

Hadith Commentary: Hunayn is a valley located three miles from Makkah where a major battle took place.
The relevance to the chapter is clear: the Prophet (sallallahu alayhi wa sallam) distributed the spoils of war at Ji‘ranah while on a journey. Nowadays, during the days of Hajj, vehicles are available at all times from the Sacred Mosque (Haram Sharif) to Ji‘ranah.
During the Hajj of 1970, I also had the opportunity to visit Ji‘ranah.
There is a spacious mosque and a well there; it is a pleasant and scenic place.

Hadith Commentary:
Some scholars hold the view that war booty (ghanimah) should not be distributed in enemy territory (dar al-harb), because complete control over the conquered land is only established after full dominance. Full dominance can only be achieved by safeguarding the war booty in the abode of Islam (dar al-Islam); therefore, it should not be distributed in enemy territory (dar al-harb).

Imam al-Bukhari rahimahullah refuted their stance by establishing that the Messenger of Allah sallallahu alayhi wa sallam distributed war booty at Ji‘ranah, which at that time was a battlefield, and that distributing it during travel is also permissible, as is evident from the aforementioned hadith of Rafi‘.

And Allah knows best.

1:
With Ibn Majah, "Abdur Rahman bin Dawud" has corroborated "Zaid bin Hubab," and furthermore, with him, there is also a supporting narration (shahid) for this from Ibn Abbas radi Allahu anha.