It is narrated from Hazrat Abu Huraira (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: The days of Tashreeq are days of eating and drinking.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 9020
Hadith Gradingحکم دارالسلام:صحيح لغيره، وهذا إسناد حسن