μᾶ
From LSJ
Τὰ μηδὲν ὠφελοῦντα μὴ πόνει μάτην → Ne tu labores frustra in iis, quae nil iuvant → Müh nicht umsonst mit dem, was dir nichts nützt, dich ab
English (LSJ)
shorter Aeol. and Dor. form for μάτηρ, in the phrase μᾶ γᾶ,
A = μῆτερ γῆ, A.Supp.890, 899 (both lyr.): as an exclam. used by women (perh. = Demeter), Herod.1.85, 4.20; μᾶ, πόθεν ὥνθρωπος; Theoc.15.89.