Nárab cumthach duit ainfhial.

Nárab cumthach duit ainfhial.

(let-not-be * companion * to-you * ungenerous-one)

Do not make a friend of an ungenerous person.

This bit is found in the eleventh of twelve stanzas in Acallam na Senórach, in which Finn imparts good advice to Mac Lugach. The whole stanza reads:

Nársad diultadach um biad
nárab cumthach duit ainfhial,
nárad furáil féin ar flaith
na h-écnaiged gach n-ard-flaith.

Is do Mhícheál Ó Cathasaigh, nach bhfuil sásta a chuid M&M's a roinnt le héinne eile, a thiomnaím an iontráil seo. :-)