Riyāʾ: Showing off in worship
Al-Ghazali calls this the quiet illness of doing good while keeping one eye on who is watching. A person whose standing rests on appearances needs an audience, and anyone near them feels pushed to answer show with more show. Naming the illness pulls someone out of that contest, so the work can be done for its own sake and left there.
ʿUjb: Self-admiration
Al-Ghazali separates this from showing off, since the audience here sits inside. A person can drop public boasting entirely and still keep a private tally of their own good record, checked whenever the work comes up. Once that tally is seen for what it is, speaking about the work stops being a quiet bid for credit.
God does not look at your outward forms but at your hearts: the measure is inward
A saying of the Prophet that Sufis return to constantly. When two accounts stand side by side, the polished one usually wins the room, and the plainer one is left looking thin. The saying moves the measure to a place nobody can stage, so a person is no longer forced to compete on surface.
Ikhlāṣ: Sincerity
Doing something for one reason only, with nothing else mixed into it. Someone who has to defend their own work stands at a fork. They can speak so their name comes out safe, or so the people listening are steadied. The first keeps them tangled in every fresh challenge to their standing, and the second lets them say what is needed and stop.
Ṣidq: Truthfulness, inside matching outside
Being one person all the way through, with no gap between the face and what stands behind it. Someone like that can talk plainly about their own work without it turning into promotion, since they are only reporting what happened. People who trust them can then point to that work when they are challenged, because it holds up when anyone looks closer.