Kautsa comes to King Raghu for his teacher's fee of fourteen crores just after Raghu has given everything away. Raghu prepares to take it from Kubera, and gold rains into his treasury overnight. In Maharashtra the gold fell on the apta and shami trees on Vijayadashami and the surplus was left for the people, which is why apta leaves are given as gold.
After the Vishvajit Raghu meets Kautsa with arghya in a clay pot and asks after his teacher's hermitage. Kautsa likens him to wild rice gleaned of grain and the waning moon, and means to go elsewhere, as the chataka does not beg of an empty autumn cloud. Varatantu, pressed, asked fourteen crores. Raghu will not bear the shame and asks Kautsa to stay as a fourth fire; he resolves to take the gold from Kubera and sleeps in his armed chariot. At dawn the treasurers report a rain of gold. Raghu gives it all; Kautsa wants only the fee; the city praises both. The gold goes on a hundred camels and mares; Kautsa blesses Raghu, and Aja is born.
Varatantu names fourteen crores. Raghu prepares to fight heaven; Narada warns Indra; Indra has Kubera rain gold on the apta and shami trees outside Ayodhya. The teacher keeps fourteen crores and returns the rest; Raghu will not take back a gift; Kautsa leaves the gold under the trees for the people, on Vijayadashami. Hence on Dasara apta leaves are brought home and given as gold: 'Sona ghya, sonyasarkha raha', the custom of sona lutne.
What is different here:
Indra and Narada enter; the gold falls on trees, not in a treasury; the surplus goes to the people; dated to Vijayadashami.
Sources: Raghuvamsha of Kalidasa, canto 5, Sanskrit with word-by-word gloss (Giirvaani, on sanskritdocuments.org), with sanskritsahitya.org; Dasara and the apta leaf: the story of Kautsa's gold (Lokmat; Divya Marathi)