Abū Hamīd bin Abū Bakr Ibrāhīm (c. 1110 – c. 1221); ابو حامد ابن ابوبکر ابراهیم, more famous by his pen-names Farīd ud-Dīn (فریدالدین) and ‘Attār (عطار - "the perfumer"), was a Persian Sufi poet, mystical philosopher, and hagiographer from Nishapur who had an immense and lasting influence on Persian poetry and Sufism.