This hadith has been narrated through another chain of transmitters (and the words are):" He will be required to work (in order to secure freedom) for that por- tion in which he has not been emancipated, without overburdening him
Opening the collection...
“Read in the name of your Lord who created.” 96:1
“My Lord, increase me in knowledge.” 20:114
“So remember Me; I will remember you.” 2:152
“Indeed, with hardship comes ease.” 94:6