Noon Sakinah is the letter noon (ن) carrying a sukoon, meaning it has no vowel of its own. Tanween is the doubling of a short vowel at the end of a word, producing that familiar "n" sound. Both behave identically once you look at the rules, which letter follows decides which of the four applies.

The Four Rules, at a Glance

Together these four rules cover all 28 letters of the Arabic alphabet, every single one falls into exactly one category depending on what follows a resting noon or tanween.

How to Actually Learn These Well

Master the letters and their articulation points first through Noorani Qaida, everything here builds on that foundation. Learn one rule at a time and find real examples of it in short surahs rather than trying to absorb all four at once. Recite aloud daily and record yourself so you can compare against your own progress and your teacher's corrections.

Common Mistakes Across All Four

The most frequent issue is simply misidentifying which rule applies, confusing a throat letter for one that triggers Ikhfa, say. The fix is largely repetition: the more examples you see, the faster the correct rule becomes automatic rather than something you have to consciously work out each time.