The reading is very uncertain, especially the signs of what Macdonald reads a a double L and the letter before the ʿ. The end of the text is cut by the left edge of the photograph. Macdonald's reading is: bʾllmtnb{l/g}ʿ{z}---- (Macdonald 2018: 238).
Macdonald, Michael C.A. 2018. The Ancient North Arabian and Ancient South Arabian Inscriptions. Pages 227-284 in Laïla Nehmé (ed.). The Darb al-Bakrah: A Caravan Route in North-West Arabia discovered by Ali I. al-Ghabban. Catalogue of the Inscriptions. Riyadh: Saudi Commission for Tourism and National Heritage. 2024/05/22; https://hal.science/hal-02096586.