TABARANI 5424:
from Saʿd b. Zayd al-Ashhalī —
[Machine] "He presented to the Prophet ﷺ a sword from Najran, or a sword was presented to the Prophet ﷺ from Najran. When it came to him, Muhammad bin Muslimah gave it to him and said, 'Fight with this in the way of Allah. When people's necks clash, strike them with the sword, then enter your house and be on guard until you are killed by a wrongful hand or death comes to you decisively.'"
الطبراني ٥٤٢٤:
عن سعد بن زيد الاشهلي —
أَنَّهُ أَهْدَى إِلَى النَّبِيِّ ﷺ سَيْفًا مِنْ نَجْرَانَ أَوْ أُهْدِيَ إِلَى النَّبِيِّ ﷺ سَيْفٌ مِنْ نَجْرَانَ فَلَمَّا قَدِمَ عَلَيْهِ أَعْطَاهُ مُحَمَّدَ بْنَ مَسْلَمَةَ فَقَالَ «جَاهِدْ بِهَذَا فِي سَبِيلِ اللهِ فَإِذَا اخْتَلَفَتْ أَعْنَاقُ النَّاسِ فَاضْرِبْ بِهِ الْحَجَرَ ثُمَّ ادْخُلْ بَيْتَكَ وَكُنْ حِلْسًا مُلْقًى حَتَّى تَقْتُلَكَ يَدٌ خَاطِئَةٌ أَوْ تَأْتِيَكَ مَنِيَّةٌ قَاضِيَةٌ»
hadithunlocked.com