Narrated Abdullah ibn Umar: The Messenger of Allah ﷺ sent us along with an army towards Najd, and he sent a detachment of that army (to face the enemy). The whole army got twelve camels per head as their portion, but he gave the detachment one additional camel (apart from the division made to the army). Thus they got thirteen camels each (as a reward).
Related hadith on this topic
Explanation & Benefits
Shaykh Umar Farooq Saeedi
Benefits and Issues:
➊ When a detachment from the army undertakes a specific operation, it is recommended (mustahabb) to grant them an additional reward in accordance with their action.
➋ However, everyone will share in the general spoils (ghanimah).
Source: Sunan Abu Dawood – Commentary by Shaykh Umar Farooq Saeedi, Page: 2741
Shaykh Umar Farooq Saeedi
Benefits and Issues:
The reconciliation and synthesis in the aforementioned ahadith is as follows:
The commander (amir) gave the reward.
The Messenger of Allah (sallallahu alayhi wa sallam) affirmed it.
This was then directly attributed to the Messenger of Allah (sallallahu alayhi wa sallam), which is correct.
Source: Sunan Abu Dawood – Commentary by Shaykh Umar Farooq Saeedi, Page: 2745