Jihad: The forgotten obligation
16: A Call from All The Doors of Heaven
Narrated Abu Huraira (r), the Prophet saw said, "Whoever spends two things in Allah's cause will be called by all the gate keepers of Paradise, who will be saying, "O so and so! come here". Abu Bakr (r) said, "O Allah's Apostle! such persons will never be destroyed". The Prophet (saw) said, "I hope you will be one of them". (Sahih Bukhari p.398, vol.1)