Yahya related to me from Malik that he had heard that the peopleof knowledge did not disapprove of people fasting using tooth-sticksat any hour of the day in Ramadan, whether at the beginning or theend, nor had he heard any of the people of knowledge disapproving ofor forbidding the practice.Yahya said that he heard Maliksay, about fasting for six days after breaking the fast at the end ofRamadan, that he had never seen any of the people of knowledge andfiqh fasting them. He said, "I have not heard that any of ourpredecessors used to do that, and the people of knowledge disapproveof it and they are afraid that it might become a bida and that commonand ignorant people might join to Ramadan what does not belong to it,if they were to think that the people of knowledge had givenpermission for that to be done and were seen doing it.Yahyasaid that he heard Malik say, "I have never heard any of the people ofknowledge and fiqh and those whom people take as an example forbiddingfasting on the day of jumua. Fasting on it is good, and I have seenone of the people of knowledge fasting it, and it seemed to me that hewas keen to do so."
USC-MSA web (English) reference: Book 18, Hadith 60