- Ejtaal Arabic Almanac: Lane's Lexicon, Hans Wehr, Lisan al-Arab and others
- Perseus: Lane's Lexicon (in text format)
- 1 times as proper noun aHqaf
AND REMEMBER that brother of [the tribe of] Ad,* how - seeing that [other] warnings had already come and gone within his own knowledge as well as in times beyond his ken -* he warned his people [who lived] among those sand-dunes: Worship none but God! Verily, I fear lest suffering befall you on an awesome day!"