Murāqaba: Keeping watch
The word means holding a steady attention on God, and al-Ghazali made it daily work rather than an occasional effort. Someone worn down to nothing can still manage it, since it asks for no strength, only staying put and paying attention. When a person wants an answer or a rescue and gets neither, being asked to simply watch is a smaller task than it sounds.
Tajallī: God showing Himself
Ibn Arabi's word for the way God appears through things while being none of them. Big events pull the eye, and a person under pressure will read the loudest one as the reply. The idea keeps the arrival and the sender apart, so someone can be shaken by what comes and still know it was only sent.
Ḥijāb: The veil
Al-Ghazali writes about veils of darkness and veils of light, and the bright ones are the harder ones to see through. A person watching for God tends to fix on whatever is largest and most impressive in front of them. The size holds all the attention, and the one being looked for goes straight past.
Moses asked to see God, and the mountain crumbled: the asking outruns what a person can hold
The Quran tells this in a few lines, and Sufis come back to it constantly. A worn-out person wants proof on a grand scale, loud enough to settle the matter for good. The story answers that power on that scale flattens whatever it touches, and the one who asked ends up on the ground, having seen nothing.
Tanzīh: God is beyond likeness
Ibn Arabi uses the word for the side of knowing God that keeps saying no to every picture of Him. Being told where God cannot be found can feel like being turned away, especially by someone who came a long distance for an answer. Each denial removes one more picture, and the person is left standing there with fewer wrong ideas and more room.