Is this a Persian Kard?

[kwiatek]

This is in Persian, but the calligraphy looks more typical of Ottoman metalwork:

بکش خنجر که جان بهر تو [ا]ی نامهربان دارم

'Draw the dagger, since my life is at your disposal, O unkind one!'

The imagery is typical of the Ottoman and Persian poetic traditions, where the poet emphasises his devotion to a cruel beloved, even asking to be killed in order to demonstrate his devotion.