Enc. of Islam (al-Aḥsāʼī, S̲h̲ayk̲h̲ Aḥmad b. Zayn al-Dīn b. Ibrāhīm; b. 1166/1753; d. 1241/1826)
Nicolas, A.L.M. Cheïkh Ahmed Lahçahi, 1910 p. 1, 2nd group (Chéïkh Ahmed Ahçahi)
Fikr wa-manhaj, 1993 t.p. (al-Shaykh Aḥmad al-Iḥsāʼī [part. voc.]) p. 7, etc. (Aḥmad ibn Zayn al-Dīn al-Iḥsāʼī [part. voc.], d. 1241 H, b. 1166 [H] in the village of al-Muṭayrifī, al-Iḥsāʼ eastern Saudi Arabia)