إِنَّمَا الْمُؤْمِنُونَ الَّذِينَ إِذَا ذُكِرَ اللَّهُ وَجِلَتْ قُلُوبُهُمْ
. 1 آمَنَ الرَّسُولُ بِمَا أُنزِلَ إِلَيْهِ مِن رَّبِّهِ وَالْمُؤْمِنُونَ كُلٌّ آمَنَ بِاللَّهِ وَمَلَائِكَتِهِ وَكُتُبِهِ وَرُسُلِهِ لَا نُفَرِّقُ بَيْنَ أَحَدٍ مِّن رُّسُلِهِ وَقَالُوا سَمِعْنَا وَأَطَعْنَا غُفْرَانَكَ رَبَّنَا وَإِلَيْكَ الْمَصِيرُ ﴿البقرة: ٢٨٥﴾
The Messenger has believed in what was revealed to him from his Lord, and [so have] the believers. All of them have believed in Allah and His angels and His books and His messengers, [saying], "We make no distinction between any of His messengers." And they say, "We hear and we obey. [We seek] Your forgiveness, our Lord, and to You is the [final] destination." (Surah Al Baqara verse:285)
. 2 لَّا يَتَّخِذِ الْمُؤْمِنُونَ الْكَافِرِينَ أَوْلِيَاءَ مِن دُونِ الْمُؤْمِنِينَ وَمَن يَفْعَلْ ذَٰلِكَ فَلَيْسَ مِنَ اللَّهِ فِي شَيْءٍ إِلَّا أَن تَتَّقُوا مِنْهُمْ تُقَاةً وَيُحَذِّرُكُمُ اللَّهُ نَفْسَهُ وَإِلَى اللَّهِ الْمَصِيرُ ﴿آل عمران: ٢٨﴾
Let not believerstake disbelievers as allies rather than believers. And whoever [of you] does that has nothing with Allah, except when taking precaution against them in prudence. And Allah warns you of Himself, and to Allah is the [final] destination. (Surah Al Imran verse:28)

Quran verses about Dawah
مَا عَلَى الرَّسُولِ إِلَّا الْبَلَاغُ وَاللَّهُ يَعْلَمُ مَا تُبْدُونَ وَمَا تَكْتُمُونَ (99)
Not upon the Messenger is [responsibility] except [for] notification. And Allah knows whatever you reveal
and whatever you conceal. (Al Maidah 5:99)
Since in the Qur’an the word “da`wah” appears numerous times, only those verses that speak of or imply the preaching and spreading of Islam are dealt here. The following lines of the Qur’an contain the word “da`wah” with this connotation.
وَإِذَا سَأَلَكَ عِبَادِي عَنِّي فَإِنِّي قَرِيبٌ ۖأُجِيبُ دَعْوَةَ الدَّاعِ إِذَا دَعَانِۖفَلْيَسْتَجِيبُوا لِي وَلْيُؤْمِنُوا بِي لَعَلَّهُمْ يَرْشُدُونَ ﴿١٨٦﴾
If some servants of mine asked you about Me, I am indeed close and I respond to the call of a suppliant if he calls upon Me. So let them respond to My (invitation), so that they believe in Me and may be on the right side. (Al-Baqarah 2:186)
Xadiiska 2
Caa’isha waxay warisey:- Rasuulku (scw) wuxuu yidhi;
إِنَّ مِنْ أَكْمَلِ الْمُؤْمِنِينَ إِيمَانًا أَحْسَنُهُمْ خُلُقًا وَأَلْطَفُهُمْ بِأَهْلِهِ
Dhab ahaan, kuwa ugu dhammaystiran muuminiinta xaga iimaanka waa kuwa ugu dabeecad wanaagsan ooguna naxariis badan qoysaskooda.
Xigasho: Sunan al-Tirmidhi 2612, Fasalka: Saxiix
Hadith 2
Aisha reported: The Messenger of Allah, peace and blessings be upon him, said:
إِنَّ مِنْ أَكْمَلِ الْمُؤْمِنِينَ إِيمَانًا أَحْسَنُهُمْ خُلُقًا وَأَلْطَفُهُمْ بِأَهْلِهِ
Verily, the most complete of believers in faith are those with the best character and who are most kind to their families.
Source: Sunan al-Tirmidhī 2612, Grade: Sahih
أَلَا وَإِنَّ فِي الْجَسَدِ مُضْغَةً إِذَا صَلَحَتْ صَلَحَ الْجَسَدُ كُلُّهُ وَإِذَا فَسَدَتْ فَسَدَ الْجَسَدُ كُلُّهُ أَلَا وَهِيَ الْقَلْبُ
Hadith 1
Al-Nu’man ibn Bashir reported: The Messenger of Allah, peace and blessings be upon him, said:
Verily, in the body is a piece of flesh which, if sound, the entire body is sound, and if corrupt, the entire body is corrupt. Truly, it is the heart.
Source: Ṣaḥīḥ al-Bukhārī 52, Grade: Muttafaqun Alayhi

Mowqica Dacwadda iyo Barashadda Diinta ee Kitaabka iyo Sunadda calaa Fahmi Salafus-Saalix