What an interesting tray.
The painting technqiue is mina kari (meena kari) میناکاری which is a type of fired, painted enamel. Isfahan is a major centre for this art form.
The image is likely inspired by the Gulistan by Saadi
These two excerpts are from the Encyclopedi Iranica at https://iranicaonline.org/articles/golestan-e-sadi
"GOLESTĀN-E SAʿDI, probably the single most influential work of prose in the Persian tradition, completed in 656/1258 by Mošarref-al-Din Moṣleḥ, known as Shaikh Saʿdi of Shiraz ."
"That same evening, Saʿdi encounters another friend in a garden, where they stay the night. Preparing to return to town the next morning, the companion begins gathering rose petals to take back as souvenirs, whereupon Saʿdi comments that ephemeral things make unsuitable objects of affection (a line Victor Hugo later borrowed for Les Orientales). Saʿdi promises instead to compose a roseate book whose leaves would never fall to the tyranny of the autumn winds"
I don't understand the Persian text nor am I absolutely certain about the inspiration for the image but this may help you as you make enquiries