(5) باب مَا جَاءَ فِي فَضْلِ الْخِدْمَةِ فِي سَبِيلِ اللَّهِ
Narrated Abu Umamah:
That the Messenger of Allah (ﷺ) said: "The most virtuous of charitable spending is the shade of a tent in the cause of Allah, or giving a servant in the cause of Allah, or a riding camel in the cause of Allah."[Abu 'Eisa said:] This Hadith is Hasan Gharib Sahih, and it is more correct to me than the narration of Mu'awiyah bin Salih.
Reference: Jami` at-Tirmidhi 1627
In-book reference: Book 22, Hadith 9
English translation: Vol. 3, Book 20, Hadith 1627