Anas said “the Prophet ﷺ sent Busaisah as a spy to see what the caravan of Abu Sufyan was doing. ”
Related hadith on this topic
Explanation & Benefits
Shaykh Umar Farooq Saeedi
Benefits and Issues:
It is forbidden for Muslims to spy on one another.
Except that if the leader of the believers (Amir al-Mu’minin) investigates some of their affairs for the purpose of rectification, then it is permissible.
However, to gather information about the conditions of the enemy, this act is politically obligatory.
Source: Sunan Abu Dawood – Commentary by Shaykh Umar Farooq Saeedi, Page: 2618
Shaykh Maulana Abdul Aziz Alvi
Hadith Commentary:
Vocabulary of the Hadith:
Talabahu:
The required need.
Qarn:
Quiver.
Benefits and Issues:
Abu Sufyan was returning from Syria with a very large trade caravan,
which had only thirty to forty men with it.
The Prophet (sallallahu alayhi wa sallam) sent a spy to gather information about its situation,
then, based on his report, gave the order to set out without informing about the required matter so that the news would not spread, and due to the need for immediate pursuit, there was no delay to gather people, and the pursuit of the caravan was the objective.
Therefore,
no special arrangements or preparations were made for it, and when Hazrat Umair (radi Allahu anhu) heard the prophecy of being among the people of Paradise, he did not even consider it worth spending time to eat a few dates, and after throwing them away, he went and confronted the enemy there.
However, it is not correct to deduce from this that the Prophet (sallallahu alayhi wa sallam) knew who was destined for Paradise and who for Hell,
because this depended on revelation (wahy).
Source: Tuhfat al-Muslim: Commentary on Sahih Muslim, Page: 4915