Choose the correct answer

Why are there no passive forms or Ism Maf'ool listed in the Sarf Sagheer table of قَلْسَىٰ?

Attached Trilateral (Mujarrad) - Bab 7: Fa'laah & Weak Root Rules

• The given Sarf Sagheer does not list passive forms or Ism Maf'ool
• They are grammatically prohibited
• Because it is a weak root
• Due to a phonetic limit