The Prophet ﷺ said, "Whoever spends a pair of anything in the cause of Allah will be called by the keepers of Paradise, each keeper at his own gate, saying, 'Come this way!'"Abu Bakr said, "Messenger of Allah, that is the one who suffers no loss."The Prophet ﷺ replied, "I truly hope you will be among them."
عن النبي ﷺ قال: من أنفق زوجين في سبيل الله دعاه خزنة الجنة- كل خزنة باب- أي قل هلم، قال أبو بكر: يا رسول الله ذاك الذي لا توى عليه، فقال النبي ﷺ: إني لأرجو أن تكون منهم.
Bukhari narrated it in jihad and expeditions (2841), and Muslim narrated it in zakat (1027:86), both of them through Shayban bin Abdul-Rahman, from Yahya bin Abu Kathir, from Abu Salama bin Abdul-Rahman, that he heard Abu Hurairah, and he related it.