Dawah O Tabligh in Quran Ayats verses and Hadith Urdu English

From the Holy Quran:
ادع إلى سبيل ربك بالحكمة والموعظة الحسنة
Invite (people) to the way of your lord with wisdom and good counsel.    (Verse: 16:125)
ولتكن منكم أمة يدعون إلى الخير ويأمرون بالمعروف وينهون عن المنكر
And there has to be a group of people from among you who call towards good and prevent from evil. (Verse: 3:104)
ومن أحسن قولا ممن دعا إلى الله وعمل صالحا وقال إنني من المسلمين
 And who is better in utterance than the one who called people towards Allah, and acts righteously and says, “I am one of those who submit themselves (to Allah Ta’ala).  (Verse: 41:33)

From the Ahadith of Nabi (Sallallahu Alaihi Wasallam):
فقال أبو سعيد أما هذا فقد قضى ما عليه سمعت رسول الله صلى الله عليه وسلم يقول من رأى منكم منكرا فليغيره بيده فإن لم يستطع فبلسانه فإن لم يستطع فبقلبه وذلك أضعف الإيمان
Hazrat Abu Sa’eed (Radhiyallahu Anhu) narrates that he heard Nabi (Sallallahu Alaihi Wasallam) saying, “Whosoever witnesses a forbidden act being committed, he should prevent it by the use of his hands; if he is unable to do so, then he should prevent it with his tongue; if he is unable to do so, he should at least consider it a vice in his heart; and this is a very low level of Iman”.
(Sahih Muslim Vol.2 Pg.211/2 - Darul Ma’rifah)
عن النعمان بن بشير رضي الله عنهما عن النبي صلى الله عليه وسلم قال مثل القائم على حدود الله والواقع فيها كمثل قوم استهموا على سفينة فأصاب بعضهم أعلاها وبعضهم أسفلها فكان الذين في أسفلها إذا استقوا من الماء مروا على من فوقهم فقالوا لو أنا خرقنا في نصيبنا خرقا ولم نؤذ من فوقنا فإن يتركوهم وما أرادوا هلكوا جميعا وإن أخذوا على أيديهم نجوا ونجوا جميعا
It has been reported on the authority of Nu’man bin Bashir (Radhiyallahu Anhu) that Nabi (Sallallahu Alaihi Wasallam) said, “There are people who do not transgress the limits (laws) of Allah Ta’ala, and there are others who do so. They are like two groups who boarded a ship; one of them settled on the upper deck, and the other on the lower deck of the ship. When the people of the lower deck needed water, they said, “Why should we cause trouble to the people of the upper deck when we can have plenty of water by making a hole in our deck”. Now, if the people of the upper deck do not prevent this group from such foolishness, all of them will perish; but if they stop them, they will be saved”.
(Sahih Al Bukhari Vol.3 Pg.152 - Darul fikr)
Our success in this life and the life hereafter is in obeying the commandments of Allah (SWT) and in following the noble ways (Sunnah) of Rasul-ullah (Sallaho Alaihe Wassallam)
There is ABUNDANT EVIDENT from the Qur’aan for Dawat o Tabligh as Allah (SWT) has said:
وَأَطِيعُواْ ٱللَّهَ وَٱلرَّسُولَ لَعَلَّڪُمۡ تُرۡحَمُونَ
[3:132]Obey Allah and the Messenger, so that you may be blessed.
قُلۡ أَطِيعُواْ ٱللَّهَ وَٱلرَّسُولَ*ۖ فَإِن تَوَلَّوۡاْ فَإِنَّ ٱللَّهَ لَا يُحِبُّ ٱلۡكَـٰفِرِينَ
[3:32] Say: .Obey Allah and the Messenger. Then, should they turn back, Allah does not love the disbelievers.
قَدۡ أَفۡلَحَ ٱلۡمُؤۡمِنُونَ
[23:1]Success is really attained by the believers
وَعَدَ ٱللَّهُ ٱلۡمُؤۡمِنِينَ وَٱلۡمُؤۡمِنَـٰتِ جَنَّـٰتٍ۬ تَجۡرِى مِن تَحۡتِهَا ٱلۡأَنۡهَـٰرُ خَـٰلِدِينَ فِيہَا وَمَسَـٰكِنَ طَيِّبَةً۬ فِى جَنَّـٰتِ عَدۡنٍ۬*ۚ وَرِضۡوَٲنٌ۬ مِّنَ ٱللَّهِ أَڪۡبَرُ*ۚ ذَٲلِكَ هُوَ ٱلۡفَوۡزُ ٱلۡعَظِيمُ

[9:72] Allah has promised to the believers, male and female, gardens beneath which rivers flow, where they shall live forever, and good homes in gardens of eternity. And Allah‘s pleasure is above all. That is the supreme success.
Tabligh Remind people as

They remind our Muslim brothers and Sisters to change their life according to Qur’aan and Sunnah and we believe that our reminder also has evidence from the book of Allah (SWT):
وَذَكِّرۡ فَإِنَّ ٱلذِّكۡرَىٰ تَنفَعُ ٱلۡمُؤۡمِنِينَ
[51:55] And keep reminding, because reminding benefits the believers.

How to actually change their life? We refer them to the Ulama (& people of knowledge) and we believe that we evidence for that from the book of Allah (SWT) as well:
فَسۡـَٔلُوٓاْ أَهۡلَ ٱلذِّڪۡرِ إِن كُنتُمۡ لَا تَعۡلَمُونَ

[21:7]...So, ask the people (having the knowledge) of the Message, if you do not know...