It is narrated with the same chain that the Noble Prophet (peace and blessings be upon him) said: If a believing servant were to know the punishments that Allah has prepared, then no one would desire Paradise (they would only keep praying to be saved from Hell); and if a disbeliever were to realize the extent of Allah’s mercy, then no one would despair of Paradise.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 9164