Which of the following is not an essential ingredient of a gift under Mohammedan law?

A Muslim hiba ordinarily requires declaration by the donor, acceptance by or for the donee, and delivery of actual or constructive possession as applicable. Writing is not a fourth essential requirement. Hafeeza Bibi confirms that an otherwise completed Muslim gift can be valid orally, consistently with the saving in TPA section 129. The question does not make every document labelled a gift valid despite failure of those substantive requirements.