In 2013, Al-Jallad used the Safaitic database as he worked on an inscription containing several mysterious words: Maleh, Dhakar, and Amet. Earlier scholars had assumed that they were the names of unknown places. Al-Jallad, unconvinced, searched the database and discovered another inscription that contained all three. Both inscriptions discussed migrations in search of water, and a possibility occurred to him: if the words referred to seasons of migration, then they might be the names of constellations visible at those times.