Thuluth script has two forms to write the Daal. The whole Daal is one of them.
The Daal does not connect to any words after it. It only connects to letters before it.
The Daal shares the same form as the “dhāl – ذ”. The form is identical, so when you master the Daal, you’ve mastered Dhal as well. The only difference is that Dhal has a noktah above it.
The Whole Daal
You use the whole Daal when you are not connecting to any other letter before it.
Namely, you would write it at the beginning of a word, or when you would like to write it on its own.
Specifically, the whole Daal has 3 strokes.
However, you can split these into 5 segments.
The first two strokes.
The first stroke is a move to the left for the length of a noktah at approximately 45 degree angle.
The next step is the second stroke. It moves from the top left end of the first stroke to the bottom right at a 45 degree angle.
You can divide the second stroke into two segments as well.
Each segment spans a noktah and half horizontally, despite being written diagonally.
The first segment of the second stroke curves slightly downwards.
This is followed by the second segment which curves slightly upwards.
The third stroke
The third stroke is a written at a 45 degree angle starting where the second stroke ended, and ending on the bottom left.
It then curves upwards to point at the beginning of the letter.
The first segment is the straight line and the second segment is the curve that points to the beginning of the letter.
The first segment of the second stroke is a straight line and has a vertical length of 2 noktahs.
Although, the actual length of the third stroke is actually 3 noktahs.
So far, all the strokes and segments of the whole Daal fit in a 3 noktah by 4 noktah grid.
In order to correctly write the final segment correctly, add a fourth noktah to the three noktahs of the third stroke.
The final segment contours this fourth noktah.
It ends by pointing towards the beginning of the letter.
The final detail
This is done by drawing a triangle at the end of the first stroke with the tip of the nib.
It is then coloured in very carefully.