In Jain kathā, many Tirthankars are praised for dāna-puṇya in their earlier births, but the ones most commonly highlighted are:

• Śrī Ādināth (Rishabhdev) — especially famous for giving food-dāna and establishing the ideal of charity.
• Śrī Mahāvīr Swami — in earlier lives, he is often described as performing great compassionate dāna.
• Śrī Nemināth — remembered in Jain tradition for deep karuṇā and renunciation, with strong merit from earlier lives.
• Śrī Pārśvanāth — also praised in life stories for puṇya, including generosity in earlier births.

If you mean the most famous example of dāna connected with a Tirthankar’s life, then Ādināth (Rishabhdev) is the most well-known.

In Jain Dharma, however, the highest emphasis is not only on giving, but on giving with pure intention, without attachment, pride, or expectation.