Friend Borrowed Money, Now Silent—What Should I Do?

Two months ago, my best friend borrowed 36k rupees to buy a 36k phone. At that time, he mentioned he would return it (which I assumed might be around his payday). I know his salary is around 35k rupees, but he hasn’t brought up the topic since. I feel awkward asking for it back, as it will strain our friendship for sure.

Should I wait longer in case he returns it on his own? What bothers me most is that he doesn’t even acknowledge it. What should I do? Are there any smart ways to handle this situation? Should I forgot this amount(which I think is big) for friendship?

He sees me as being in a better financial position, so maybe he assumes I can afford to help him this way? Not sure what is right...

Edit1- I really believe that once I ask for the money, he’ll give it back, and I’ll end up losing a close friend, leaving just an ordinary one.