Ilhām: Knowing that arrives in the heart without study
Al-Ghazali sets this apart from what a person picks up by effort. Anyone good with their hands knows the feeling: the answer shows up before the reasoning does, and the explaining comes afterward, if ever. An ability that lands that way leaves a person able to take the work seriously without believing they manufactured the talent.
Istiʿdād: The particular capacity each person is shaped to receive by
Ibn Arabi uses this for how each thing takes in only what it is built to hold. Gifts land unevenly: one person for metal, one for fine detail, one for holding a whole plan in their head. Nobody is handed the full set, and seeing that settles the comparing that starts whenever skilled people work side by side.
Al-Muṣawwir: The Fashioner, who gives every thing its form
One of the names the Quran gives God. Someone shaping wood or metal does a small version of something much larger, and the satisfaction in it runs deeper than the task warrants. Making things then stops looking like a lesser occupation than prayer, since the pleasure in a finished piece points back to the same source.
God is beautiful and loves beauty: care over how a thing turns out matters to God
A saying of the Prophet the Sufis repeat often. Usefulness alone would settle most objects, and yet people keep smoothing and refining far past the point of need; the tradition reads that pull as an echo of something in God. Hours spent on a finish nobody will inspect still count as part of the work.
Iḥsān: Doing a thing beautifully, as though under a gaze that misses nothing
The Prophet described it as worshipping God as if you could see Him, knowing He sees you. The inside of a joint, the back of a panel, the part that gets covered forever: those places show what a person's standard is. Work held to that gaze keeps the hidden parts as careful as the parts on display.
Ikhlāṣ: Sincerity, wanting one thing in what you make
Al-Ghazali gives this more attention than almost any other quality. Skilled people get praised, praise is pleasant, and the work quietly starts bending toward whatever earns more of it. Sincerity is the check on that, so a person works the same way whether or not their name stays attached to the piece.