Islam is the perfect and complete religion for all mankind (Al-Maida:3). Allah has guided the believers to the truth (Al-Baqara:213). It is the only religion acceptable to Allah (Al-Imran:85). It is obligatory for Muslims to give Da ‘wah only for Allah’s pleasure for the following reasons:
(1) Da’wah is a commandment from Allah SWT (Al-Baqara:21):
Allah enjoins the Muslims to invite mankind to Islam. He commands: Invite to the way of your Rabb with wisdom and beautiful preaching; and argue with them in ways that are best and most gracious, for your Rabb knows best, who have strayed from His Path, and who receive guidance. (An-Nahl: 125).
(2) Muhammad PBUH is the last prophet sent by Allah SWT and is referred to as the Seal of the Prophets:
This means the Qur’an is the final revelation sent by Allah SWT and Muhammad PBUH the Last Messenger till the last day of the world, He is Rahmatullil Alamin – Allah has sent him as Rahmat for the entire universe (Al-Anbiya:107). As his followers, it is the responsibility for Muslims to give Da’wah to every human being wherever he/she can.
The popular view amongst Muslims is that the final words of Allah to Muhammad PBUH were:
“This day I have perfected your religion for you, completed My favour upon you, and have chosen for you Islam as your religion.”
(3) Da’wah is the Sunnah of Allah’s Messenger Muhammad PBUH
Prophet Muhammad has been chosen by Allah to give a universal message to all humanity.
Allah sent His Messenger as a witness, a bearer of glad tidings, a warner, as one who invites mankind to Allah by His leave, and as a lamp spreading light (Al-Ahzab: 45-46).
Allah says in Quran: Say (0 Muhammad) This is my way; I do invite unto Allah with certain knowledge, I and whoever follows me. Glory to Allah! And I am not of the polytheists. (Yusuf: 108).
(4) The concept of calling or inviting others to the beautiful path of Islam.
Da’wah is one of the best ways of serving Allah SWT. Allah praises those Muslims who invite people to Islam. He says: You are the best of peoples, evolved for mankind. You enjoin what is right, forbid what is wrong, and believe in Allah. (Al-Imran:11O).
This is not an invention but a direct commandment from Almighty Allah (SWT) who said thus in the Qur’an: Who is better in speech than the one who calls to Allah, does righteous deeds and says indeed I am among the Muslims. – (Surah 41:33).
Almighty Allah (SWT) said further: Call to the way of your Lord with wisdom and good preaching. – (Surah 16:125).
Let there arise among you a group inviting to all that is good, enjoining righteousness and forbidding evil. Those are the successful ones. – (Surah 3:104).
So as you can see, dawah is very important, so important that Allah (SWT) stressed upon it several times in the Holy Book. Countless hadiths focus on the importance of dawah in Islam and that explains why the Prophet Muhammad (SAW) did it all through his lifetime. Following his demise, the companions (sahabah) continued the tradition and it has not stopped till today. In the 21st century, there are Muslim missionaries doing da’wah all over the planet and they are having a real impact on the lives of so many people.