Sahih Muslim
The Book Pertaining to Paradise, Its Description, Its Bounties and Its Intimates (Kitab Al-Jannat wa Sifat Naimiha wa Ahliha)
Book Number: 040 / Hadith Number: 6815
Samura b. Jundub reported Allah's Apostle (may peace -be upon him) as saying: There will be some to whose ankels the fire will reach, some to whose knees, some to whose waist the fire will reach, and some to whose collar-bone the fire will reach.