Sayyiduna Jarir (may Allah be pleased with him) said: the Messenger of Allah (peace and blessings be upon him) said to some of his Companions: "I am going to recite to you some verses from the end of Surah al-Zumar; whoever among you weeps, Paradise becomes obligatory for him." So he (peace and blessings be upon him) recited this verse: "And they did not esteem Allah with the esteem that is His due" [al-Zumar: 67] up to the end of the surah. Some of us wept and some did not. Those who did not weep said: O Messenger of Allah, we tried hard to weep but could not. He (peace and blessings be upon him) said: "I will recite this verse to you again, so whoever does not weep, let him make himself weep."
Hadith Referenceالمعجم الكبير للطبراني / باب الجيم / 2446