مُسْنَدُ أَحْمَدَ
Musnad Ahmad 43
Musnad Abu Bakr as-Siddiq (ra)
حَدَّثَنَا عَلِيُّ بْنُ عَيَّاشٍ، حَدَّثَنَا الْوَلِيدُ بْنُ مُسْلِمٍ، حَدَّثَنِي وَحْشِيُّ بْنُ حَرْبٍ، عَنْ أَبِيهِ، عَنْ جَدِّهِ، وَحْشِيِّ بْنِ حَرْبٍ، أَنَّ أَبَا بَكْرٍ، رَضِيَ اللَّهُ عَنْهُ عَقَدَ لِخَالِدِ بْنِ الْوَلِيدِ عَلَى قِتَالِ أَهْلِ الرِّدَّةِ وَقَالَ إِنِّي سَمِعْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَقُولُ نِعْمَ عَبْدُ اللَّهِ وَأَخُو الْعَشِيرَةِ خَالِدُ بْنُ الْوَلِيدِ وَسَيْفٌ مِنْ سُيُوفِ اللَّهِ سَلَّهُ اللَّهُ عَزَّ وَجَلَّ عَلَى الْكُفَّارِ وَالْمُنَافِقِينَ.
It was narrated from Wahshi bin Harb that Abu Bakr appointed Khalid bin al-Waleed as commander to fight the apostates and he said: I heard the Messenger of Allah (ﷺ) say: “What a good slave of Allah and member of the tribe Khalid bin al-Waleed is! [He is] one of the swords of Allah that Allah, may He be glorified and exalted, has unsheathed against disbelievers and hypocrites.`
Musnad Ahmad, 43Sahih because of corroborating evidence, this is a Da'if isn