Muhammad bin Ja'far Ghandar محمد بن جعفر غندر صاحب الكرابيس · The Book of the Fear Prayer

"The Messenger of Allah (ﷺ) was camping between Dajnan and 'Usfan, besieging the idolaters. The idolaters said: 'These people have a prayer that is dearer to them than their sons and daughters. Plan it, then strike them with a single heavy blow.' Jibril, peace be upon him, came and told the Messenger of Allah (ﷺ) to divide his companions into two groups, then lead one group in prayer while the others faced the enemy, on guard and with weapons at…

The Messenger of Allah (ﷺ) led his companions in offering the fear prayer. One group prayed with him while the other was facing the enemy. He led them in praying two rak'ahs, then they went and took the place of the others, and the others came and he led them in praying two rak'ahs, then he said the taslim.