Narrated 'Aishah:When Zaid b. Harithah, Ja'far and 'Abd Allah b. Rawahah were killed, the Messenger of Allah (ﷺ) sat down in the mosque and grief was visible in his face. Then he (the narrator) mentioned the rest of the tradition
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“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