Whatever has been described so far to strive hard to have more sincerity and truth and to consider deeds and worships as small and insignificant was about the deeds and worships which some one performs for himself; and all this emphasis is because of the reason, that no one should like and accept about himself anything, except, the deeds and worships which are performed with sincerity, and should not account for whatever is not done with truth and sincerity, rather should see it as sinning and transgression. But lest he regards and presumes so about the deeds and worships of others, because underestimating others deeds not only doesn't produce any gain - the gain which is obtained for underestimating one's own deeds - rather is detrimental, because it produces the background whereby others become discouraged and disgusted with respect to their deeds and worship, thus the doors of goodness and prosperity becoming closed upon them.
Therefore, from this consideration to treat others deeds and worships in this manner is not allowed, instead, for appraisal of others deeds their very apparent value should be considered as genuine. Or even higher than this, Allah's Generosity and Magnanimity should be considered as criteria, and should be presumed so, that very often Allah (the Glorious, the Exalted), because, of his Generosity and Magnanimity might accept their deeds, even if they are not accompanied with truth and sincerity. Also, we should consider the possibility that perhaps Allah (the Glorious, the Exalted), because of His kindness and love towards the servants, might accept and grant their prayers, even if they are recited from the tip of their tongue, and not from the depth of their souls. Therefore, from this consideration lest we disappoint and discourage Allah's servant from His blessing and forgiveness.
And thus with such undesirable conduct make him discouraged and with respect to his deeds and worships, ultimately resulting in his quitting worship and servitude. Even if his deeds and worships are not sincere, and are mixed with some undesirable things, it is not too far that this very apparent and superficial deeds and worship - if are not renounced suddenly - performed by a servant would become the basis for breezing the cold breeze of Allah's grace over him, thus, blowing the spirit of reality in the spiritless skeleton of his worships; the illumination of reality radiating upon his soul in such a manner that he would suddenly became transformed, gaining access to the real worship and the reality of worship, from that superficial worship, and attaining righteousness, salvation, and eternal prosperity. I even believe that if an intoxicated sodomite in state of intoxication, would cry O' Allah! and besought Him for help, He would reply him.