Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) narrates: I heard the Prophet (peace and blessings be upon him) forbidding qaza‘. The narrator says: I asked what is meant by qaza‘, so the narrator named Ubaidullah explained: When a child's head is shaved and some hair is left here and some hair is left there. The narrator named Ubaidullah pointed to his forehead and one side of his head while saying this. It was asked from Ubaidullah whether the ruling is the same for both girls and boys regarding this. He replied: I do not know. He (i.e., my teacher) narrated this hadith in this way.