To adopt an easy approach when calling to Allah
One of the most important features of the Prophet's mission is that it is characterized by ease; ease of speech and commissioning. This is very important; to adjust the contemporary trends of calling to Allah.
Because some of the Islamic movements are closed on themselves; because of the hardness of concepts and understanding, they used to put people in hardship! Many of the religious texts point out the concept of (removing the hardship), and the related general rules.The texts of the Quran and Hadith are agreed in this sense, making it a general unquestionable rule of Islam;
The Quran clearly stated this;
the Almighty said (what means)
And We have certainly made the Qur'an easy for remembrance, so is there any who will remember?
Quran (54: 32
and the Almighty said in the comprehensive verse (what means)
and has not placed upon you in the religion any difficulty
Quran (22: 78