Literally “Jayhún,” a river in Turkistán.

Qur’án 9:51.

The Mathnaví.

Qur’án 76:5.

Muḥammad.

Qur’án 55:26, 27.

Qur’án 15:21.

Farídu’d-Dín Attár (ca. 1150–1230 A.D.), the great Persian Súfí poet.

Hadíth, i.e. action or utterance traditionally attributed to the Prophet Muḥammad or to one of the holy Imáms.

The Mathnaví.