HAAJIS
Haajis is a thought which in the beginning produces no reaction in the nafs. If one is fortunate to eliminate the thought in the haajis stage, the other four stages will not become applicable.
KHAATIR
If one fails to eliminate the haajis thought and it establishes its presence in the nafs without the latter (i.e. the nafs) plotting to give it practical expression, it ((he thought) enters the Khaatir stage.
HADEETH-UN- NAFS
This stage consists of the nafs scheming regarding the enaction or negation of that which has established itself in the nafs. The nafs ruminates on the plot of doing or not doing the act without giving preference to any side of action. The thought is now known as Hadeeth-un- Nafs.
The hukm (effect) of these three stages is no punishment if the thought is evil and no reward if the thought is good. Punishment and reward do not apply to the stages of Haajis, Khaatir and Hadeeth-un- Nafs.
HAMM
When the nafs after having reflected about action or inaction regarding the deed it had schemed, inclines partially to one side (i.e. any side whether to commit or shun the act), the thought is known as Hamm. Thought in this stage merits thawaab if virtuous and punishment if evil.
AZM
When the thought finally asserts itself and a decision is made to give it practical expression, it is known as Azm. Thawaab and punishment are applicable to this stage as well.