ʻIshq (Arabic: عشق; in Persian: eshgh; in Urdu: ishq; in Dari: eshq; in Pashto: eshq; in Turkish: aşk and in Azerbaijani: eşq), means "love". The word is derived from ‘ashiqah, a vine: the common belief is that when love takes its root in the heart of a lover, everything other than God is effaced. In Islam's Sufi and mystic doctrine it is a concept which refers to "divine love" or "a creature's love for its creator"; i.e. man's love for God.
Read more about Ishq: As A Word in Different Languages, As An Islamic Concept