Hadith on Neighbors: Be kind to neighbors, regardless of religion

Mujahid reported: We were with Abdullah ibn Amr and his servant was preparing a roasted sheep. Abdullah said, “Young man, when you are finished, then begin with our Jewish neighbor.” A man said, “Jewish? May Allah rectify you!” Abdullah said, “I heard the Prophet, peace and blessings be upon him, enjoining good treatment of our neighbors so often that we thought he would make them our heirs.”

Source: al-Adab al-Mufrad 105

Grade: Sahih (authentic) according to Al-Albani

عَنْ مُجَاهِدٍ قَالَ‏ كُنْتُ عِنْدَ عَبْدِ اللهِ بْنِ عَمْرٍو وَغُلاَمُهُ يَسْلُخُ شَاةً فَقَالَ‏ يَا غُلاَمُ إِذَا فَرَغْتَ فَابْدَأْ بِجَارِنَا الْيَهُودِيِّ فَقَالَ رَجُلٌ مِنَ الْقَوْمِ‏ الْيَهُودِيُّ أَصْلَحَكَ اللَّهُ‏ قَالَ‏ إِنِّي سَمِعْتُ النَّبِيَّ صلى الله عليه وسلم يُوصِي بِالْجَارِ حَتَّى خَشِينَا أَوْ رُئِينَا أَنَّهُ سَيُوَرِّثُهُ‏

105 الأدب المفرد كتاب الجار باب جار اليهودي

المحدث الألباني خلاصة حكم المحدث صحيح في صحيح الأدب المفرد 95