Hadhrat Mufti Taqi Usmani دامت برکاتہم while talking on the importance of practising Sunnah told:
Hadhrat Maulana Maseehullah Khan Sahib of Jalalabad رحمۃ اللہ علیہ has said when an idea is born in the heart of doing some good deed, this idea in the terminology of the mystics is called “Warid” meaning a spontaneous urge. They say that the “idea” is in fact a guest sent by Allah which should be welcomed and honoured. For example, drinking of water while standing you are reminded suddenly that you should follow the Sunnah of drinking while sitting and then you sit down to drink. Now this “Warid” or the “Idea” will come to you again and again and urge you to follow many other acts of the Sunnah. Thus, you will go on increasing your good deeds. On the other hand if you do not welcome this “divine guest” but turn it away you shall be a loser. For example, you are drinking water standing but you fail to correct yourself when you are reminded that you should drink while sitting, on the ground that thereby you are not commiting a sin. This act of yours is tantamount to turning away the “divine guest”. When you repeat this apathy on your part the “Divine Guest” will naturally forsake you. This will result in the hardening of your heart. Instead of the “Idea” to do good deeds, “Ideas” to do bad deeds and commit sins will visit your heart.
The moral we draw from this discussion is that whenever an urge occurs in the heart to act upon the Sunnah the opportunity should be seized atonce and the urge should be satisfied by immediate actions. A little practice on this line will put you on the right tract of the Sunnah.
[Jamiah Masjid Baitul Mukarram, Karachi; 6th August 1993]