Jami` at-Tirmidhi 1969
جامع الترمذي#1969SahihSafwan bin Sulaim narrated that the Prophet said:"The one who looks after a widow and a poor person is like the Mujahid in the cause of Allah, or like the one who fasts all the day and stands (in prayer) all the night
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirSahih
Al-AlbaniSahih
Bashar Awad MaaroufHasan Sahih
Zubair Ali ZaiSahih - Agreed Upon
In-book reference: 27:75