For some information about the mystic and martyr Mansur al Hallaj, see this post.

You went away but remained in me
And thus became my peace and happiness.

In separation, separation left me
And I witnessed the Unknown.

You were the hidden secret of my longing,
Hidden deep within my conscience deeper than a dream.

You were my true friend in the day
And in darkness my companion.

Translation Mahmood Jamal