Derived Quadrilateral - Bab 1: Tafa'lul (Tasarbul)

1. From Rubaa'i Mujarrad to Rubaa'i Mazeed Feeh

The previous level introduced a quadrilateral verb with 4 original root letters and no added letter.
A Rubaa'i Mazeed Feeh verb still has 4 original root letters, but one or more extra letters are added.
This level begins with a form that adds تَـ at the beginning.

2. Bab Tafa'lul

The past-tense pattern taught here is تَفَعْلَلَ.
Its example is تَسَرْبَلَ.
The clearest structural sign is the prefixed تَـ before a 4-letter root.

3. Root, Added Letter and Meaning

The original root letters of تَسَرْبَلَ are س، ر، ب، ل.
The initial تَـ is added.
Its verbal noun is تَسَرْبُلٌ, meaning to put on or wear a shirt/garment.

4. Complete Sarf-e-Sagheer

Recite the complete paradigm taught in this level:
تَسَرْبَلَ يَتَسَرْبَلُ تَسَرْبُلًا فَهُوَ مُتَسَرْبِلٌ الأَمْرُ مِنْهُ تَسَرْبَلْ وَالنَّهْيُ عَنْهُ لَا تَتَسَرْبَلْ
It contains active past, active Mudhaari', Masdar, Ism Fa'il, imperative, and prohibitive.

5. Understand the Paradigm by Slots

FormCategory
تَسَرْبَلَActive past
يَتَسَرْبَلُActive Mudhaari'
تَسَرْبُلٌMasdar
مُتَسَرْبِلٌIsm Fa'il
تَسَرْبَلْImperative
لَا تَتَسَرْبَلْProhibitive

This lesson focuses on these active forms; passive forms and Ism Maf'ool are not added here.

6. Compare with Rubaa'i Mujarrad

Compare the new form with the previous bare quadrilateral example.

Key differenceExampleType
No added prefixبَعْثَرَRubaa'i Mujarrad
Added initial تَـتَسَرْبَلَRubaa'i Mazeed Feeh

Both have 4 original root letters; the difference is the added initial تَـ in the derived form.

7. A Simple Map of the Level

Remember these points:
1. Rubaa'i Mazeed Feeh keeps 4 original root letters and adds extra letters.
2. This level teaches the pattern تَفَعْلَلَ.
3. Example: تَسَرْبَلَ, root س، ر، ب، ل.
4. The added element is initial تَـ.
5. Masdar: تَسَرْبُلٌ = wearing a shirt or garment.
6. مُتَسَرْبِلٌ is the Ism Fa'il.
7. Command/prohibition: تَسَرْبَلْ / لَا تَتَسَرْبَلْ.
8. Passive forms and Ism Maf'ool are not part of this lesson's taught paradigm.