Muwatta Malik 891
موطأ مالك#891SahihYahya related to me from Malik from Nafi that if Abdullah ibn Umar had finished the fast of Ramadan and intended to do hajj, he would not cut his hair or beard at all until he had done hajj. Malik said, "It is not necessary for people to do the same
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Salim al-HilaliMauquf Sahih
In-book reference: 20:187