Nasai

(1) In this narration, the journey referred to is a journey for battle. When the enemy’s territory is near and there is a danger that, by cutting off the hand, the person may become agitated and flee into the lands of the disbelievers and, joining them, become an apostate. Absolute travel is not intended here, because it is narrated from Hudhayfah ibn al-Yaman (radi Allahu anhu) that “Establish the prescribed punishments (hudud) in both travel and residence.” (Musnad Ahmad: 316/5, al-Sahihah of al-Albani, hadith: 1972) Furthermore, there is no reason not to implement the prescribed punishment during travel. Just as the Shari’ah is for residence, it is also for travel; therefore, a specific type of travel is intended here.

(2) This ruling does not mean that the prescribed punishment is to be completely dropped; rather, when the return from the journey occurs, the prescribed punishment will be carried out, because the prescribed limits set by the Shari’ah cannot be abrogated.

(3) From the hadith, it is understood that in the implementation of the prescribed punishments (hudud), utmost foresight and caution are necessary. If there is a risk of great harm from the implementation of the punishment, it can be temporarily postponed.

Explanation:
1:
In Musnad Ahmad, in the narration of Ubadah ibn as-Samit, the Messenger of Allah (sallallahu alayhi wa sallam) said:
"Establish the hudud (legal punishments) in both residence and travel."
There appears to be a contradiction between this and the hadith of Busar ibn Arta’ah.
Allamah Shawkani says:
There is no contradiction between the two,
because the hadith of Busar ibn Arta’ah is specific, whereas the hadith of Ubadah is general.
For not every traveler is a mujahid, but every mujahid is a traveler.
Also, the hadith of Busar pertains to the hadd (legal punishment) for theft,
whereas the hadith of Ubadah pertains to hudud in general.

Note:
(Due to corroborating narrations, this hadith is authentic, as the author has mentioned;
otherwise, its narrator "Ibn Lahi’ah" is weak.)

Benefits and Issues:
There is a difference of opinion regarding whether Busr ibn Artat was a Companion (Sahabi), and Allamah Shawkani rahimahullah has stated that the implementation of hudud (prescribed punishments) in the land of war (dar al-harb) is dependent upon the decision of the authority (wali al-amr).
(, Nayl al-Awtar, Chapter: On whether the hadd of cutting off (the hand) and others are to be carried out in dar al-harb or not?)