Pray In Aid
Dictionary of Terms and Phrases Used in American or English Jurisprudence · Benjamin Vaughan Abbott · 1879
Dictionary of Terms and Phrases Used in American or English Jurisprudence
In old English practice, the tenant in a real action, doubtful of his own title, might pray in aid, or call for assistance of another having a better right to help him to plead.
3 Bl. Com. 300.