DAWAH AND KNOWLEDGE: In the light of Quran and Hadith

Some brothers has raised a question that dawah cannot be given without knowledge.

Obviously it is true but.......... These terms has to defined before reaching the conclusion.............

What is Dawah??????????
What is Knowledge????????
What is their Relation between Dawah and Knowledge?????
What Quran Says ……….
. Dawah in principle is a duty of all muslims thats why we are selected nation
You are the best peoples ever raised up for mankind. You enjoin to good, and forbid evil, and you believe in Allah. (3:110) (Surah Ale Imran)

Invite  to the way of your Rabb (Islam) with wisdom (with the reasoning of the Quran) and excellent preaching and argue with them in a way that is better. Truly, your Rabb knows best 'who has gone astray from His Path, and He is the Vest Aware of those who are guided. (16:125).

2.DAWAH ALSO INCLUDES REMINDING THE DAEE (person giving Dawah/caller)

Allah Pak is calling UMMATE MUSLIMA for giving Dawah for not only for other but for himself/herself also.
And remind, for verily, he reminding profits the believers. (51:55).
March forth, whether you are light (being healthy, young and'
wealthy) or heavy (being ill, old and poor), and strive hard with your wealth and your lives in the cause of Allah. This is better for you, if you but know. (9:41). 

As for those who strive hard in Us (Our cause), We will surely guide them to Our Paths. And Verily! Allah is with the Muhsinun (good doers). (29:69).

You who believe! Enter into Islam wholeheartedly; and follow
not the footsteps of Saitan. Verily he is to you a plain enemy. (2:208)

By the time. Verily man is in loss, Except those who believe, and
do good deeds, and recommend one another to the truth, and
recommend one another to the patience. (103:1-3).

AS THE QURAN SAY WHOSOEVER FOLLOW PROPHET HAS TO GIVE DAWAH. There is no specification of status and syllabus for giving Dawah

ALLAH PAK SAYS..............

 Say (0 Muhammad ): This is my way; I invite towards Allah, with clear evidence and strong belief, I and whosoever follows me. (12:108). 

0 you who believe! Ward off yourselves and your family from a
Fire, whose fuel is man and stones, over which are set angels strong, and severe, who disobey not (in executing) the commandments they receive from Allah, but do that which they are commanded. (66:6).

Verily, those who say: 'Our lord is Allah (Alone), and then they are upright, on them the angels will descent, saying: 'Fear not, nor grief But receive the glad tidings of paradise, which you have been
promised. We have been your friends in this world and in the hereafter. Therein shall have that your inner-selves desire, and therein you shall have for which you ask for. An entertainment from (Allah), the oftForgiving, Most Merciful. And who is better in speech than he who invites (mankind) towards Allah, and does what is right and says: I am one ofthe Muslims. (41: 30-33)

And remind , for verily, he reminding profits the believers. (51:55).
4.Dawah is must for Individual Muslim also and for Muslim Ummah as  a whole collective Responsibility also

Allah Pak say in Surah AL ASR 

By the time. Verily man is in loss, Except those 
who believe, and do good deeds,and recommend one another to the truth, and recommend one another to the patience. (103:1-3).
COLLECTIVE Responsibility of Ummah
Muslims! There must be a group among you who would invite people to good and would command them to do good deeds and would prevent them from forbidden things and these are people who Will attain salvation. (3:105)
The Believers, men and women, are protectors,one to another; they enjoin what is just, and forbid what is evil. (9:71).

Abdullah ibne-Amr  narrates that Nabi Sallallahu Alaihi Wasallam said: Convey from me even if it be a single verse. (Bukhari) .

Abu Mas'ud., narrates that Rasulullah Sallallahu Alaihi Wasallam said: Whoever guides others to do good, his reward is like the one who does it. (Abu Dawud).

Abu Hurairah ~ narrates that Rasulullah ~ said: Whoever invites
towards righteousness, his reward would be equal to the rewards of all those who followed him, without diminishing their reward in any
respect. And whoever invites towards wrongdoing, the sin of which he is guilty would be equal to the sins of all those who followed him, without diminishing their sins in any respect. (Muslim).
So all Muslim will give DAWAH  WITH A CONDITION…………
…….the content of dawah or preaching SHOULD BE  
within the limit of his/her knowledge.
Shaikh Salih Ibn Uthaimeen Rahimahullah has clearly explained in his Fatwa . He says…….
[Fatawa Ulama al-Balad al-Haraam (p. 329)]
“If a person understands what he is calling people to, it makes no difference whether he is a great and prominent scholar or a seeker of knowledge who is serious in his pursuit or a normal person who has certain knowledge of the issue in question.
The Messenger (peace and blessings of Allaah be upon him) said: “Convey from me, even if it is one verse,” and he did not stipulate that the daa’iyah (caller) should have reached a high level of knowledge, 
but it is essential that he should have knowledge of that to which he is calling people.
But calling out of ignorance or calling based on emotion is not permissible.”
[Fatawa Ulama al-Balad al-Haraam (page No. 329)
He /she should not spread something he is not knowing.HE SHOULD APPLY WISDOM and Hikmah and should remain within his/her knowledge about content of Dawah.
Quran has not said that Only person with a particular position/degree will give Dawah. Alim/Non Alim all will give Dawah but according to his ability and knowledge. Even an Alim has a limitation if he will start giving verdict like a Mujtahid/Mufti/Imam he is crossing limit. Similarly if a normal person start giving Masael/Islamic Rulings/interfering with Ulema jurisdiction he is doing wrong

2.There is no limit of Knowledge.No one can say that this much time/this much syllabus is having complete knowledge of Islam. 
 Quran and Ahadith has not specified the limit of knowledge.

Narrated Abu Hurairah .. that Allah's Messenger ~ said,"If
anyone of you improves his religion, then his good deeds will be
rewarded 10 times to 700 times for each good deed and a bad deed will be recorded as it is." (Bukhari)

All these Ayats Ahadith are clearly telling.

1. Dawah duty is for all Muslims.

2. It is duty of all followers of Prophet not only for Scholars/Alim

3 But always with the word of caution that not exceeding the limit of his knowledge and Ability.

4. It will revive the Imaan of Daee and will benefit,one who is giving dawah. This benefit is for all muslims.

5. It is also one of the four requirement to be fulfilled so he could be saved from loss as said in SURAH WAL ASR.