The usual mode of administering oaths now practiced in the commonwealth, with the ceremony of holding up the hand, shall be observed in all cases in which an oath may be administered by law, except as provided in sections sixteen to nineteen, inclusive.
Mass. Gen. Laws ch. 233, § 15
Mode of administering oaths
Official source: Massachusetts Legislature. Reproduced from public-domain Massachusetts statutes; confirm against the official source for the current text. Not legal advice.