Al-Adab Al-Mufrad 128
Mujahid said, "I was with 'Abdullah ibn 'Amr while his slave was skinning a sheep. He said, 'Boy! When you finish, start with the Jewish neighbour.' A man there exclaimed, 'Jewish? May Allah correct you!' He replied, 'I heard the Messenger of Allah ﷺ recommend that we treat our neighbours well until we feared (or we thought) that he would order us to make them our heirs.'"
حَدَّثَنَا أَبُو نُعَيْمٍ، قَالَ: حَدَّثَنَا بَشِيرُ بْنُ سُلَيْمَانَ، 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 ﷺ يُوصِي بِالْجَارِ، حَتَّى خَشِينَا أَوْ رُئِينَا أَنَّهُ سَيُوَرِّثُهُ.