In the name of Allah, the Most Beneficent, the Most Merciful

Allah said:

إِنَّمَا الْمُؤْمِنُونَ إِخْوَةٌ فَأَصْلِحُوا بَيْنَ أَخَوَيْكُمْ وَاتَّقُوا اللَّهَ لَعَلَّكُمْ تُرْحَمُونَ

The believers are brothers, so reconcile between your brothers, and fear Allah that you may receive mercy.

Surah Al-Hujurat 49:10

And Allah said:

أُبَلِّغُكُمْ رِسَالَاتِ رَبِّي وَأَنصَحُ لَكُمْ

Noah said: I convey the message of my Lord to you and I sincerely advise you.

Surah Al-A’raf 7:62

And Allah said:

أُبَلِّغُكُمْ رِسَالَاتِ رَبِّي وَأَنَا لَكُمْ نَاصِحٌ أَمِينٌ

Hud said: I convey the message of my Lord to you and I am to you a trustworthy adviser.

Surah Al-A’raf 7:68

Tamim Ad-Dari, RadhiAllahu Anhu, reported: The Messenger of Allah, SallAllahu Alayhi Wa Sallam, said:

الدِّينُ النَّصِيحَةُ

Religion is sincerity.

It was said, “To whom?” 

He, SallAllahu Alayhi Wa Sallam, said:

لِلَّهِ وَلِكِتَابِهِ وَلِرَسُولِهِ وَلِأَئِمَّةِ الْمُسْلِمِينَ وَعَامَّتِهِمْ

To Allah, His Book, His Messenger, the leaders of the Muslims, and their common people.

Source: Sahih Muslim 55, Grade: Sahih

Jareer ibn Abdullah, may Allah be pleased with him, said:

بَايَعْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ عَلَى السَّمْعِ وَالطَّاعَةِ وَأَنْ أَنْصَحَ لِكُلِّ مُسْلِمٍ

I swore allegiance to the Messenger of Allah, SallAllahu Alayhi Wa Sallam, pledging to listen and obey and to be sincere to every Muslim.

Source: Sahih Muslim 88, Grade: Sahih

Anas ibn Malik, RadhiAllahu Anhu, reported: The Prophet, SallAllahu Alayhi Wa Sallam, said:

لَا يُؤْمِنُ أَحَدُكُمْ حَتَّى يُحِبَّ لِأَخِيهِ أَوْ قَالَ لِجَارِهِ مَا يُحِبُّ لِنَفْسِهِ

None of you has faith until he loves for his brother or his neighbor what he loves for himself.

Source: Sahih Bukhari 13, Grade: Muttafaqun Alayhi

Success comes from Allah, and Allah knows best.