Daal دَال
A soft 'd' as in dog. Never joins the next letter.
Its shapes
Daal never joins the letter after it, so it only has two shapes.
Trace it with your finger
👄 Where the sound comes from
The tongue · د
Most letters are made by the tongue touching or nearing the roof of the mouth or the teeth.
⚖️ Don't mix it up with
- ض
Ḍaad · heavy
A heavy 'd' made with the side of the tongue. The special letter of Arabic.
Say Daal and the other letter one after the other, slowly, and feel the difference. A teacher can check you.