Here are the 14 auspicious dreams (14 sapne) traditionally seen by the mother of a Tirthankar (e.g., Mata Trishalā, mother of Bhagwān Mahāvīr). In Śvetāmbara tradition they are fourteen; in Digambara tradition the list is sixteen (noted below).

Śvetāmbara: 14 dreams and their simple meanings

• Hāthī (Elephant): greatness, noble strength.
• Vṛṣabh/Bail (Bull): Dharma-strength; the child will be a great spiritual teacher.
• Siṃh (Lion): fearlessness and supreme leadership.
• Śrī/Lakṣmī Devī: auspiciousness and splendour of virtues.
• Phūl-mālā (Garland): fame and respect that spread like fragrance.
• Pūrṇimā Candra (Full Moon): peace and coolness to the world.
• Sūrya (Sun): removal of ignorance; rise of right knowledge.
• Dhvaja/Patākā (Flag): victory of Dharma and guidance to many.
• Pūrṇa-Kalaś (Full vase): fullness of virtues, purity, compassion.
• Kamal-sarovar (Lotus-lake): purity and detachment amidst the world.
• Kṣīr-sāgar/Mīlky Ocean: vastness of spiritual attainment.
• Deva-vimān (Celestial airplane/palace): honor by devas for the future teacher.
• Ratno kā ḍher (Heap of jewels): abundance of virtues and wisdom.
• Nirdhūm Agni (Smokeless fire): burning of karmas; pure, luminous tapas.

Digambara note (difference)

• Digambara tradition counts 16 dreams. Along with the above, it includes:

- Mīna-yugma (Pair of fish): beauty and auspicious charm. - Nāgendra-bhavan/lofty divine palace (or rising palace): extraordinary dignity and divine honor.

• In some Digambara lists, the “flag” appears only in Śvetāmbara, while “pair of fish” and the special “palace” make the total sixteen.

Spiritual essence

• These dreams announce the descent (garbha-kalyāṇak) of an exalted soul. They signify that the child will benefit countless beings through right faith, right knowledge, and right conduct, ultimately leading many towards liberation.

For a simple illustrated list and meanings, see this resource from JainKnowledge:

• Fourteen Auspicious Dreams of Mother Trishalā
• Q&A: 14 dreams of Mata Trishlā Devī