四分律行事鈔資持記 3.911

3.911

九中，初制習方術。羅漢射事者，《十誦》：目連入村乞食，居士婦懷妊，問言：是男是女耶？目連云：是男，及生是女，遭謗問佛，佛言：本是男胎，中轉為女故；目連見前不見後，非妄語也。律下，次教呪誓。謂有屈抑之事，發誓以雪之，意是求佛為證，故云南無佛等。

In the ninth [section]: First, it prohibits practicing occult arts. Regarding the arhat predicting an event: in the Daśādhyāya-vinaya, Maudgalyāyana entered a village to beg for food. A householder's pregnant wife asked: "Is it a boy or a girl?" Maudgalyāyana said: "It is a boy." When she gave birth, it was a girl. Having been slandered, he asked the Buddha, and the Buddha said: "Originally it was a male fetus, but in the middle it changed into a female; Maudgalyāyana saw the former, not the latter, so it was not a false speech." Below, "the Vinaya..." next teaches uttering an oath. This refers to when there is an injustice, swearing an oath to clear it; the intention is to ask the Buddha to bear witness, hence it says "Namo Buddhāya" and so forth.