Sayyiduna Anas (may Allah be pleased with him) said: I saw the Prophet (peace and blessings be upon him) and the barber; he was cutting his (peace and blessings be upon him) hair, and the Companions (may Allah be pleased with them) were standing around him, and their intention was that the hair should fall into their hands.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب النكاح / 13411