It is narrated from Sayyiduna Abu al-Darda' (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "Whoever removes from the path of the Muslims something that harms them, Allah Almighty writes for him a good deed in return for it, and whoever Allah has written a good deed for with Himself, He admits him into Paradise because of it."
This hadith is narrated from Sayyiduna Abu al-Darda' (may Allah be pleased with him) only with this chain, and Abu Bakr bin Abi Maryam (may Allah have mercy on him) is alone in narrating it.
Hadith Referenceالمعجم الأوسط / باب الألف / 32
Hadith Gradingمحدثین:إسناده ضعيف لضعف أبي بكر بن أبي مريم
Hadith Takhrij«قال الهيثمي: فيه أبو بكر بن أبي مريم وهو ضعيف «مجمع الزوائد ومنبع الفوائد، ج 3، ص 135»» «أخرجه أحمد فى «مسنده» برقم: 28124»