In the Name of Allaah, Most Beneficent, Most Merciful.
May Peace, Mercy and Blessings of Allaah be on you.
"Invite (all) to the way of your Lord with wisdom and beautiful preachings and argue with them in ways that are best and most gracious."
[Al Qur'an 16:125]
The Arabic word ‘Da’wah’, in simple terms, mean 'an invitation'. In Islamic context it means 'an invitation to Islam'. Thus Da’wah means conveying the message of Islam to Non-Muslims and inviting them to Islam. A person who does Da'wah is called a 'Da'ee'.
Allaah, the Glorified says in the Noble Qur'an in Surah Aal-e-Imran, Chapter number 03, Verse number 104:
"Let there arise out of you a group of people inviting to all that is good, enjoining what is right and forbidding what is wrong, and it is they who are succesful."
Allaah, the Praiseworthy further says in Surah Qasas, Chapter number 28, Verse number 87:
"Let no one turn you away from the revelations of Allaah after they have been revealed to thee: and invite (men) to thy Lord, and be not of the company of those who join gods with Allaah."
Allaah, the Most High further says in Surah Fussilat, Chapter number 41, Verse number 33:
"And who is better in speech than he who invites (all) to Allaah and does righteous deeds and says,'I am one of the Muslims'."
And Allaah, the Exhalted further says in Surah Al-Asr, Chapter number 103:
Verse number 01: "By the Time."
Verse number 02: "Indeed! man is in a loss."
Verse number 03: "Except those who have faith and do good works and encourage one another to Truth and encourage one another to patience."