(73) بَابُ فَضْلِ مَنْ يَعُولُ يَتِيمًا
Abu Hurayra reported that the Prophet, may Allah bless him and granthim peace, said, "The person who strives on behalf of the widows and pooris like those who strive in the way of Allah and like those who fast in theday and pray at night."
Reference: Al-Adab Al-Mufrad 131
In-book reference: Book 7, Hadith 3
English translation: Book 7, Hadith 131