Hadith 68
كان إذا أخذ من شعره أو قلم أظفاره أو احتجم بعث به إلى البقيع فدفن
"When the Prophet (peace and blessings be upon him) would cut his hair or nails or undergo cupping, he would send those hairs to the cemetery of Baqi' al-Gharqad, and then they would be buried there."