Ihya' 'ulumuddin - Imam Abi Hamid Muhammad Ibn Muhammad al Ghazali (Muasassah al Halibiy wa Shirkah, 1967)
ws.jl.4,5,6.c.1, jl.1,2,3.c.1-2/stoc4, jl.1-2, c.2; jl.3, c.1-3; jl.4,c.1-2; jl.5,c.1