It wasnarrated from Nafi' that Ibn 'Umar said:
"The Messenger ofAllah (ﷺ) forbade Qaza'." He (Nafi') said: "What is Qaza'?"He said:"It means shaving part of a child's head and leavinganother part." (IT)
English reference (IT): Vol. 4, Book 32, Hadith 3637 (IT)
Arabic reference (IT): Book 32, Hadith 3768 (IT)