There is ABUNDANT EVIDENT from the Qur’aan in their call as Allah (SWT) has said:
[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.
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):
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:
[21:7]...So, ask the people (having the knowledge) of the Message, if you do not know...