Does the content of memory belong to the Image-Only Object with substance or the Image-Only Object without substance?

"Matter" (質) refers to material form (rūpa-dharma) with physical obstruction, composed of the seeds of the four great elements. The real seeds of the four great elements constitute the five sense objects; an Image-Only Object that depends on the five sense objects is called an Image-Only Object with matter, while an Image-Only Object unrelated to the five sense objects belongs to the category of Image-Only Objects without matter. What the mental consciousness accompanying the five sense consciousnesses (pañcavijñāna-sahagata-manovijñāna) corresponds to is the Image-Only Object with matter, whereas what the solitary mental consciousness corresponds to is the Image-Only Object without matter. Recollection is, of course, the mind consciousness alone recalling things that have already passed; the corresponding mental sense-object Image-Only Object does not involve the five sense objects, and is therefore an Image-Only Object without matter.