The importance of Dhikr of Allaah in warding off al-Nifaaq (hypocrisy):

بسم الله والحمد لله والصلاة والسلام على رسول الله ، وبعد

Ibn al-Qayyim رحمه الله said:

Doing a lot of remembrance of Allaah عز وجل is a protection from hypocrisy. The hypocrites do not remember Allaah تعالى except very little. Allaah تعالى mentions about the hypocrites:

﴿وَلَا يَذْكُرُونَ اللَّـهَ إِلَّا قَلِيلًا﴾

{…and they do not remember Allaah but little} [Surah al-Nisaa’ (4): 142]

Ka`b (Ibn Maalik) رضي الله عنه said: “Whoever remembers Allaah عز وجل a lot, will be freed from hypocrisy.”

No wonder – and Allaah knows best – Allaah تعالى ended Surah al-Munaafiqoon, saying:

﴿يَا أَيُّهَا الَّذِينَ آمَنُوا لَا تُلْهِكُمْ أَمْوَالُكُمْ وَلَا أَوْلَادُكُمْ عَن ذِكْرِ اللَّـهِ ۚ وَمَن يَفْعَلْ ذَٰلِكَ فَأُولَـٰئِكَ هُمُ الْخَاسِرُونَ﴾

{O you who Believe! Let not your properties or your children divert you from the remembrance of Allaah. And whosoever does that, then they are the losers.} [Surah al-Munaafiqoon (63):9]

In this there is a warning (for the Believers) from the Fitnah of the hypocrites, those who became negligent in the remembrance of Allaah عز وجل and fell into hypocrisy.

[الوابل الصيب من الكلم الطيب (1/80)]