ENOfficial
Ilyas bin Salamah(bin Al Akwa’) said on the authority of his father “We went on an expedition with Abu Bakr (Allaah be pleased with him) in the time of the Messenger of Allah(ﷺ) and our war cry was “Put to death” “Put to death”.”
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا هَنَّادٌ، عَنِ ابْنِ الْمُبَارَكِ، عَنْ عِكْرِمَةَ بْنِ عَمَّارٍ، عَنْ إِيَاسِ بْنِ سَلَمَةَ، عَنْ أَبِيهِ، قَالَ غَزَوْنَا مَعَ أَبِي بَكْرٍ - رضى الله عنه - زَمَنَ النَّبِيِّ صلى الله عليه وسلم فَكَانَ شِعَارُنَا أَمِتْ أَمِتْ .
sunnah.com