قَالُوا لَن نَّبْرَحَ عَلَيْهِ عَـٰكِفِينَ حَتَّىٰ يَرْجِعَ إِلَيْنَا مُوسَىٰ

Qaloo lan nabraha AAalayhi AAakifeenahatta yarjiAAa ilayna moosa

They said, "We will never cease being devoted to it [i.e., the calf] until Moses returns to us."