Abu Hurairah (May Allah be pleased with him) reported:
The Prophet ﷺ said, "One who strives to help the widows and the poor is like the one who fights in the way of Allah." The narrator said: I think that he ﷺ added also: "I shall regard him as the one who stands up (for prayer) without rest and as the one who observes fasts continuously".

[Al-Bukhari and Muslim].

وعنه عن النبي ﷺ: " الساعي على الأرملة والمسكين كالمجاهد في سبيل الله" وأحسبه قال: " وكالقائم الذي لا يفتر، وكالصائم الذي لا يفطر" ((متفق عليه)).