Is it permissible to deal with Al-Rajhi Bank for selling solar cell systems to customers with a diminishing murabaha profit rate of 4%?

"Issuing a ruling on a transaction requires a complete understanding of its conditions and details, which are not available here. The Sharia guidelines for murabaha have been previously mentioned. It is permissible to deal with Al-Rajhi Bank's financing programs based on the approval of its Sharia board, and there is no harm in that."