In the name of Allah, the Beneficent, the Merciful
Al-Nawawi records in his book Riyad us-Saliheen:
Allah the Exalted said:
وَاعْبُدُوا اللَّهَ وَلَا تُشْرِكُوا بِهِ شَيْئًا ۖ وَبِالْوَالِدَيْنِ إِحْسَانًا وَبِذِي الْقُرْبَىٰ وَالْيَتَامَىٰ وَالْمَسَاكِينِ وَالْجَارِ ذِي الْقُرْبَىٰ وَالْجَارِ الْجُنُبِ
Worship Allah and associate nothing with Him. Be good to parents and to relatives, orphans, the needy, the near neighbor, the neighbor farther away.
Surah An-Nisa 4:36
Aisha reported: The Messenger of Allah, peace and blessings be upon him, said:
مَا زَالَ جِبْرِيلُ يُوصِينِي بِالْجَارِ حَتَّى ظَنَنْتُ أَنَّهُ لَيُوَرِّثَنَّهُ
Gabriel continued to advise me to treat neighbors well until I thought he would make them my heirs.
Source: Sahih Muslim 2624, Grade: Sahih
Abu Dharr reported: The Messenger of Allah, peace and blessings be upon him, said:
إِذَا طَبَخْتَ مَرَقًا فَأَكْثِرْ مَاءَهُ ثُمَّ انْظُرْ أَهْلَ بَيْتٍ مِنْ جِيرَانِكَ فَأَصِبْهُمْ مِنْهَا بِمَعْرُوفٍ
When you make soup, then add extra water to it and take it to the people of the neighboring house and give them some of it courteously.
Source: Sahih Muslim 2625, Grade: Sahih
Abu Shuraih reported: The Messenger of Allah, peace and blessings be upon him, said:
وَاللَّهِ لَا يُؤْمِنُ وَاللَّهِ لَا يُؤْمِنُ وَاللَّهِ لَا يُؤْمِنُ
By Allah, he does not believe! By Allah, he does not believe! By Allah, he does not believe!
It was said, “Who is it, O Messenger of Allah?” He said:
الَّذِي لَا يَأْمَنُ جَارُهُ بَوَايِقَهُ
He whose neighbor is not safe from his evil.
Source: Sahih Bukhari 5670, Grade: Sahih
Abu Huraira reported: The Messenger of Allah, peace and blessings be upon him, said:
لَا يَدْخُلُ الْجَنَّةَ مَنْ لَا يَأْمَنُ جَارُهُ بَوَائِقَهُ
He will not enter Paradise whose neighbor is not secure from his evil.
Source: Sahih Muslim 46, Grade: Sahih
Abu Huraira reported: The Messenger of Allah, peace and blessings be upon him, said:
يَا نِسَاءَ الْمُسْلِمَاتِ لَا تَحْقِرَنَّ جَارَةٌ لِجَارَتِهَا وَلَوْ فِرْسِنَ شَاةٍ
O Muslim women, do not belittle any gift for your neighbor, even the hoof of a sheep.
Source: Sahih Muslim 1030, Grade: Sahih
Abu Huraira reported: The Messenger of Allah, peace and blessings be upon him, said:
مَنْ كَانَ يُؤْمِنُ بِاللَّهِ وَالْيَوْمِ الْآخِرِ فَلْيَقُلْ خَيْرًا أَوْ لِيَصْمُتْ وَمَنْ كَانَ يُؤْمِنُ بِاللَّهِ وَالْيَوْمِ الْآخِرِ فَلْيُكْرِمْ جَارَهُ وَمَنْ كَانَ يُؤْمِنُ بِاللَّهِ وَالْيَوْمِ الْآخِرِ فَلْيُكْرِمْ ضَيْفَهُ
Whoever believes in Allah and the Last Day, let him speak goodness or be silent. Whoever believes in Allah and the Last Day, let him honor his neighbor. Whoever believes in Allah and the Last Day, let him honor his guest.
Source: Sahih Muslim 47, Grade: Sahih
In another narration, the Prophet said:
مَنْ كَانَ يُؤْمِنُ بِاللَّهِ وَالْيَوْمِ الْآخِرِ فَلَا يُؤْذِي جَارَهُ
Whoever believes in Allah and the Last Day, let him not harm his neighbor.
Source: Sahih Muslim 47, Grade: Sahih
Abdullah ibn Amr reported: The Messenger of Allah, peace and blessings be upon him, said:
خَيْرُ الأَصْحَابِ عِنْدَ اللَّهِ خَيْرُهُمْ لِصَاحِبِهِ وَخَيْرُ الْجِيرَانِ عِنْدَ اللَّهِ خَيْرُهُمْ لِجَارِهِ
The best companion to Allah is the best to his companions, and the best neighbor to Allah is the best to his neighbors.
Source: Sunan At-Tirmidhi 1944, Grade: Sahih
Success comes from Allah, and Allah knows best.