Silsilat al-Ahadith al-Sahihah

It is narrated from Sayyiduna Abu Sa'id Khudri (may Allah be pleased with him), he used to say: (We) would say "Marhaba" (welcome) to the will of the Messenger of Allah (peace and blessings of Allah be upon him). The Messenger of Allah (peace and blessings of Allah be upon him) used to advise us regarding you. By "you" he meant the students of hadith.