Weak (da'if) — scholars do not use this report as evidence for rulings.
Abdullah bin Amir bin Rabi'ah narrated from his father who said:"I saw the Prophet - (a number of times) such that I was not able to count - using the Siwak while he was fasting
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