Hakim al-Umma Hadhrat Mawlana Ashraf ‘Ali Thanawi (may Allah have mercy on him) said,

‘And now there is this malady which many people are falling into – perceiving themselves as very pious and saintly but I say who would think such a thing when they have no way of knowing what state they will find themselves in when they die? On what virtuousness do they take pride in? Allah protect us from such thinking.

What is there to be arrogant about when in all likelihood we cannot pick out one ra’kaat from our entire life that can be said to match up to the standards expected by Allah and then these paltry offerings themselves are also by dint of His favour and His blessing otherwise we could not even execute this’

(Malfooz 211, pg 169, Malfoozhat Hakeem-ul-Ummat, [Al-ifhadhat al yawmia…], Published Idara Taaleefat-e-Ashrafia)

 Source: The excellent blog, Beneath the Shade