Narrated Abu Rafi: Abu Huraira said, "A man or a woman used to clean the mosque." (A sub-narrator said, 'Most probably a woman..') Then he narrated the Hadith of the Prophet
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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