اِصْطَلَحَ — اِضْطَرَبَ — اِطَّلَعَ
Translation: he reconciled; he was disturbed; he became aware.
Rule 6 says that after an emphatic first radical (ṣād, ḍād, ṭāʾ, ẓāʾ), the iftiʿāl t often becomes ṭāʾ, with further assimilation in some environments.
In اِصْطَلَحَ, ṣād belongs to the root, while ṭāʾ represents the modified added consonant of the pattern. It is a predictable morphological sound change, not arbitrary spelling.
Opening interactive controls...
Rule 6: Emphatic Consonants in Iftiʿāl
Doubled Verbs: Complete Conjugation of ذَبَّ يَذُبُّ, Explanations and Essential Rules
اِصْطَلَحَ — اِضْطَرَبَ — اِطَّلَعَ
Translation: he reconciled; he was disturbed; he became aware.
Rule 6 says that after an emphatic first radical (ṣād, ḍād, ṭāʾ, ẓāʾ), the iftiʿāl t often becomes ṭāʾ, with further assimilation in some environments.
In اِصْطَلَحَ, ṣād belongs to the root, while ṭāʾ represents the modified added consonant of the pattern. It is a predictable morphological sound change, not arbitrary spelling.