The term isrāʾ, based on the first verse of sūra 17, is typically rendered as ‘Night Journey’. There is little compelling evidence that this was the original meaning of the Qur'anic text, and medieval lexicographers and exegetes preserved a number of alternative meanings, such as that asrā was a denominal verb meaning ‘to travel through the uplands (al-sarāh)’. Another explanation is that asrā is a denominal verb of the noun sariyya (pl. sarāyā), a military expedition. By drawing on early historiographical descriptions of sarāyā and South Arabian inscriptions, which give evidence that the word sariyya is of Sabaic origin, the Qur'anic meaning of asrā was evidently something like ‘to send on a royal expedition’. Early Islamic Arabic poetic texts also offer extremely compelling evidence that the first Muslims were familiar with some of the key concepts of South Arabian royal authority as they appear in Sabaic inscriptions.
