It is the Madd without which the letter itself does not exist, and it needs no cause such as a Hamzah or sukun. It lasts two counts, whether joining or stopping. Attached to it are:
- Madd al-'Iwad (مَدّ العِوَض): stopping on a Tanwin with fathah by turning it into an Alif, as when stopping on ﴿عَلِيمًا حَكِيمٗاعَلِيْمًا حَكِيْمًا﴾ (An-Nisa 4:17).
- Silah Sughra (الصِّلَة الصُّغْرَى): lengthening the pronoun Ha' between two voweled letters with no Hamzah after, as in ﴿إِنَّهُۥ هُوَاِنَّهٗ هُوَ﴾ (Al-Isra 17:1). Details are in the chapter on Ha' al-Kinayah.
- Madd at-Tamkin (مَدّ التَّمْكِين): a Madd Ya after a doubled Ya with kasrah, as in ﴿حُيِّيتُمحُيِّيْتُمْ﴾ (An-Nisa 4:86).
- The opening letters of surahs gathered in حيٌّ طَهُرَ, as explained below.