In fact this world always demands efforts to reach a particular goal. A single bite of food doesn't go to the mouth without effort and trouble. Especially the person who loves this world more than hereafter, he has to bear always tribulation because he will never be content therefore tribulation is linked with the love of this world and that is inevitable. This is the meaning I understood but Allah knows better. Please always mention reference of Hadith so we can easily find the original text in Arabic for hadith and check the context to explain in a better way.