It is narrated from Hazrat Abu Huraira (may Allah be pleased with him) that my beloved friend (peace and blessings be upon him) advised me regarding three things (which I will not leave until my death): (1) to fast three days every month, (2) to perform Witr prayer before sleeping, (3) to take a bath on Friday.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 7180
Hadith Gradingحکم دارالسلام:حديث صحيح، خ: 1178، م: 721، وهذا إسناد منقطع، الحسن لم يسمع من أبى هريرة