Muwatta Malik 941
موطأ مالك#941SahihYahya related to me from Malik from Humayd bin Qays from Mujahid Abu'l Hajjaj from Ibn Abi Layla from Kab ibn Ujra that the Messenger of Allah, may Allah bless him and grant him peace, said to him, "Perhaps your pests are troubling you?" He replied that indeed they were, and the Messenger of Allah, may Allah bless him and grant him peace, said, "Shave your head and fast three days or feed six poor men or sacrifice a sheep
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Salim al-HilaliSahih
In-book reference: 20:14