The qalqalah letters are collected in قُطْبُ جَدٍّ. A sākin qalqalah letter releases with a characteristic sound, but this does not justify adding a new fatḥah or ḍammah.
Ṣafīr is a characteristic sound of ṣād, zāy, and sīn; they nevertheless remain distinct letters.
Takrīr belongs to rāʾ but is not permission to trill it repeatedly.
Practice أَقْ، أَطْ، أَبْ، أَجْ، أَدْ, then contrast صَ — زَ — سَ and رَ — رِ — رُ at a controlled pace.
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Qalqalah, ṣafīr, and takrīr
Comprehensive Revision — Applying Tajwīd Rules
The qalqalah letters are collected in قُطْبُ جَدٍّ. A sākin qalqalah letter releases with a characteristic sound, but this does not justify adding a new fatḥah or ḍammah.
Ṣafīr is a characteristic sound of ṣād, zāy, and sīn; they nevertheless remain distinct letters.
Takrīr belongs to rāʾ but is not permission to trill it repeatedly.
Practice أَقْ، أَطْ، أَبْ، أَجْ، أَدْ, then contrast صَ — زَ — سَ and رَ — رِ — رُ at a controlled pace.