Corpus of Electronic Texts Edition
The Tidings of the Resurrection (Author: [unknown])

section 25

Though, then, the rewards of the righteous are different, yet there is one reward which they have in another way, namely, the complete blessedness and joy which they possess in God, and also because to one who has a lower reward it is the same as if he had a higher reward when that reward is given to one who is as dear to him as himself.