«رِسَالَةً تُودِعُهَا شَرْحَ حَالِكَ»[
Write an epistle describing your circumstances.
But the letter must satisfy an unusual formal constraint: every letter of one word must carry dots, and every letter of the next word must be undotted, alternating throughout. Producing intelligible, coherent Arabic under this restriction requires uncommon command of both vocabulary and orthography.
For illustration, the letters of «بِنْت» are dotted, while those of «حَمْد» are undotted. Such isolated examples are far easier than a continuous meaningful epistle. The actual composition belongs to the next level.
Letter classSample wordAll letters dottedبِنْت — bāʾ, nūn, tāʾAll letters undottedحَمْد — ḥāʾ, mīm, dāl