Al-Mugheerah bin Shuʿbah had a spear, and when we went out with the Messenger of Allah ﷺ on a campaign, he would take it with him and stick it in the ground. And the people would pass by him and give him a ride. I said: When I go to the Prophet ﷺ I will tell him. He said: If you do that, no one will pick up a lost item.
كَانَ لِلمُغِيرَةِ بْنِ شُعْبَةَ رُمْحٌ فَكُنَّا إِذَا خَرَجْنَا مَعَ رَسُولِ اللهِ ﷺ فِي غَزَاةٍ خَرَجَ بِهِ مَعَهُ فَيَرْكُزُهُ فَيَمُرُّ النَّاسُ عَلَيْهِ فَيَحْمِلُونَهُ فَقُلْتُ لَئِنْ أتَيْتُ النَّبِيَّ ﷺ لَأخْبِرَنَّهُ فَقَالَ إِنَّكَ إِنْ فَعَلْتَ لَمْ تَرْفَعْ ضَالَّةً