I kept it concealed until I saw it had spread, meaning this hadith of Abdullah bin Busr regarding fasting on Saturday.
حدثنا محمد بن الصباح بن سفيان حدثنا الوليد
ما زلت له كاتما حتى رأيته انتشر يعني حديث عبد الله بن بسر هذا في صوم يوم السبت
No references are available.
[Its chain of transmission is daif] * Walid bin Muslim used ambiguous transmission wording (anana), and the statement attributed to Malik is not established from him because of the break in its chain, as Abu Dawud did not meet Malik.