Posted on 07/22/2012 by __socrates

SIJJIN. سجين
A deep pit in which is kept the register of the actions of the wicked, and hence this register itself. Qur’an, Surah lxxxiii. 7, 8: “The book of the wicked is in Sijjin, and what shall make thee know what Sijjin is ? — lt is an inscribed hook.” (See also Mishkat, book v. ch. iii. pt. 3.)

Based on Hughes, Dictionary of Islam