It is important for the proof of loan that you provide to show that they've okayed the loan and that you can access the money. The document doesn't need the bank account number, it just needs to state that the bank officials have disbursed the amount, with a date (That date needs to be recent to ensure the loan you've taken is not an old one. That is one way to tell if it is authentic, as an old loan cannot guarantee the money still exists).
If it is not in English, it needs to be translated to ensure the IRCC agents, or whoever looks at it, can understand the document.
If any or all of your documents (including prior educational documents) are in Nepali, it is important you get them translated into English and notarized to ensure they are authentic.