I heard the Prophet ﷺ saying, "Who ever spends a couple (of objects) in Allah's cause, will be called by the Gatekeepers of Paradise who will say, "O so-and-so, come on!" Abu Bakr said, "Such a person will never perish or be miserable' The Prophet ﷺ said, "I hope you will be among such person."
سَمِعْتُ النَّبِيَّ ﷺ يَقُولُ مَنْ أَنْفَقَ زَوْجَيْنِ فِي سَبِيلِ اللَّهِ دَعَتْهُ خَزَنَةُ الْجَنَّةِ أَىْ فُلُ هَلُمَّ فَقَالَ أَبُو بَكْرٍ ذَاكَ الَّذِي لاَ تَوَى عَلَيْهِ قَالَ النَّبِيُّ ﷺ أَرْجُو أَنْ تَكُونَ مِنْهُمْ