Musnad Ahmad 30:2327

Ghassan narrated to us, Hammad ibn Salamah narrated to us, from Muhammad ibn ‘Amr, from Abu Salamah, from Abu Hurairah, that the Messenger of Allah (may Allah bless him and grant him peace) said: "If there is any good in anything you treat yourselves with, it is in cupping (hijama)." *** ‘Abdullah ibn Muhammad narrated to us, ‘Abdullah ibn Ahmad said: And I heard it from him myself, he said: Muhammad ibn Fudayl narrated to us, from ‘Ata’ ibn al-Sa’ib, from Mujahid, from Abu Hurairah, who said: The Messenger of Allah (may Allah bless him and grant him peace) said: "Whoever loves to meet Allah, Allah loves to meet him, and whoever hates to meet Allah, Allah hates to meet him."