5. ‘Ali ibn Ḥusain ibn Mūsā narrated to me from ‘Ali ibn Ibrāhīm ibn Hāshim, from his father, from ‘Ali ibn Ḥakam, from Sulaymān ibn Nahīk, who said: Abū ‘Abdillāh (Imam Sādiq ) explained the verse, “And we gave them both refuge on a mound, where there was rest and security, watered by a spring” (23:50). He (the Imam ) said, “Mound’ refers to Najaf of Kūfah and ‘spring’ refers to the Euphrates (River).”