Which is the usual genitive form for the diptote Aḥmad?

Munṣarif and Ghayr Munṣarif — Definitions, Causes and Parsing

• بِأَحْمَدٍ
• بِأَحْمَدَ
• بِأَحْمَدٌ
• بِأَحْمَدًا