It is narrated from Khawat bin Jubair (may Allah have mercy on him), he said: Sleeping in the early part of the day is ignorance, sleeping in the middle part is a good habit, and sleeping in the last part is foolishness.
Hadith Referenceالادب المفرد / كتاب القائلة / 1242
Hadith Gradingالألبانی:صحيح
Hadith Takhrij«صحيح : أخرجه ابن أبى شيبة : 26677 و الطحاوي فى المشكل : 1073 و الحاكم : 293/4 و البيهقي فى شعب الإيمان : 47337»