Look at the passing away of Abdul Karim and ponder over it; there is a great lesson in this event for its being so sudden. Everybody must realise that one day he has to die and therefore he should be prepared for it. If one thinks over this kind of things, one can become a true believer. When a man inclines towards the worldly gains, he begins to cherish very many hopes and this creates difficulties for him. He who thinks that he is going to live long and plans for the fulfilment of many hopes – I will do this and I will do that it becomes difficult for him to purify himself. A believer should be such that when he goes to sleep at night he should think that perhaps he would not be alive next morning and when he gets up in the morning he should think that perhaps he would not live to see the evening of that day. The best thing for a man is that he should get his heart purified, and that is not possible without the Grace of God. When the heart is purified, the first thing that happens is that he does not cherish long hopes. That gives him a sort of contentment. On the other hand if a man is always running after the worldly gains, his heart becomes impure.
Death is the real admonisher – the best of all the admonishers.
(Malfoozat Vol. 8, pg. 198)