Hi Ning Tong,
HANA Rev 95 as minimum requirement for SFINANCIALS 1503. However, It is recommended to have latest version in place. HANA Rev 102 (SPS 10) is planned to release in October.
Please refer to the note for more information on 2170126 - SAP HANA SPS 09 Database Revision 97
Also refer to https://websmp204.sap-ag.de/~sapidb/011000358700001182742013for Hana revision strategy.
Hope this helps.
Regards,
Santosh Varanasi