Ibn Majah

Benefits and Issues:

➊
This incident pertains to the Battle of Mu'tah, in which three commanders of the Muslims were martyred: namely, Zayd bin Harithah, Ja'far al-Tayyar, and Abdullah bin Rawahah, radi Allahu anhum.
In the end, Khalid bin Walid, radi Allahu anhu, took command of the army and, with great wisdom, led the small Muslim force out from the encirclement of an enemy army thirty-three times its size.
On this occasion, the Messenger of Allah (sallallahu alayhi wa sallam) gave Khalid the title "Sword of Allah" (Sayf Allah).

➋
It is permissible to recite poetry that expresses bravery and stirs enthusiasm during battle.

➌
Disliking the paradise of the soul means fear of death, which is a natural thing in humans; however, in the battlefield, death is a means of entering Paradise.
Similarly, whoever fears death is, in effect, delaying his entry into Paradise.
The intent of Abdullah bin Rawahah, radi Allahu anhu, was: do not fear death, for by fearing this death, Paradise will be attained.

➍
The meaning of the poetry is not that Ibn Rawahah, radi Allahu anhu, was afraid of death; rather, through these verses, the aim was to instill zeal and passion in the other fighters.

➎
Poetry in which there is nothing contrary to the Shariah—reciting, listening to, memorizing, and conveying such poetry to others is all permissible.