Taqlīd: Belief held secondhand
Taqlīd is faith taken on trust from other people and never checked from the inside. Someone can keep every rule and use all the correct words while only repeating what they were handed as children. Al-Ghazali found exactly this in himself after years of teaching, and losing it cost him nothing he had ever owned.
ʿUjb: Being pleased with your own knowledge
ʿUjb is the quiet satisfaction a person takes in how much they understand. The more someone can explain, the less they expect to be corrected, and the more their learning starts serving their standing among others. Al-Ghazali counted it among the things that ruin scholars, since a mind that feels full has stopped listening.
God has seventy thousand veils of light and darkness: light can hide him as surely as darkness
A saying of the Prophet puts veils of light beside veils of darkness. Wrongdoing blocks the view in an obvious way; learning and piety block it quietly, because a person looks at their own clarity and stops there, satisfied. Al-Ghazali thought the bright veils were the harder ones, since someone can be shut out by the very thing everyone praises them for.
Ḥayra: Bewilderment
Ḥayra is standing before God with every explanation gone. Ibn Arabi treated it as one of the highest places a person can reach, because the more someone knows of God, the less any of it fits into a tidy account. Losing the answers feels like collapse at first, and afterward the person is facing God instead of their own summary of him.
ʿIlm ladunnī: Knowledge given straight from God
ʿIlm ladunnī is understanding that arrives as a gift rather than as the result of study. The Quran uses the phrase for the knowledge given to Khidr, the guide Moses followed and could never predict from one step to the next. Once a person's own answers give out, they can be taught something they would never have worked out on their own.