What was described by Abu'l Fazl in the following words:

'It is the portrait of wisdom; a rough sketch from the realm of the ideas; a dark light ushering in day; a black cloud pregnant with knowledge; speaking though dumb; stationary yet travelling; stretched on the sheet, and yet soaring upwards.'

Letter (khat)

In Abu'l Fazl's words:

A letter (khat) is the portrait of wisdom; a rough sketch from the realm of the ideas; a dark light ushering in day; a black cloud pregnant with knowledge; speaking though dumb; stationary yet travelling; stretched on the sheet, and yet soaring upwards.