āveṇikadharmāḥ[āveṇikadhammā] extraordinary qualities of a Buddha. There are eighteen extraordinary qualities of a Buddha. They are as follows

(1) knowledge of all things of the past,
(2) knowledge of all things of the present,
(3) knowledge of all things of the future,
(4) propriety of actions of the body,
(5) propriety of actions of speech,
(6) propriety of actions of thought,
(7) firmness of intuition,
(8) firmness of mindfulness,
(9) firmness of concentration,
(10) firmness of energy,
(11) firmness of emancipation,
(12) firmness of wisdom,
(13) freedom from fickleness,
(14) freedom from noisiness,
(15) freedom from perplexity,
(16) freedom from hastiness,
(17) freedom from heedlessness, and,
(18) freedom from inconsiderateness.

Buddhānusmṛti - A Glossary of Buddhist Terms

Mahāyāna-Sūtrālaṅkāra. XVIII. 137. Saddharmapuṇḍarīkasūtram. II. 88. Uttaratantra. III. 11-13.