What's the best way to invest my retirement money?

I have received a substantial amount of money after my retirement. I am not sure what's the best way to invest it. My children are already working, but I will need to have money for my daughter's wedding, which is likely to be in another 6 months. Are there any really safe investment options that promise good returns?

Money in old-age is the biggest support system, so you must carefully plan your investment. My advice is to consult a financial advisor from a reputed company. They will make suggestions and give you enough information on the various options available. This will help you choose one that suits you the best.

http://abfsg.com/Pages/aditya-birla-private-equity.html

There are three main investment categories
1-stock
Stocks are shares of ownership in a corporation. They have historically provided more long-term growth than bonds
2-cash its like a money-market fund
3-Bonds

Here are few investment options for the retired people.
1. Senior Citizens' Saving Scheme (SCSS)
2. Post Office Monthly Income Scheme (POMIS) Account
3. Bank fixed deposits (FDs)
4. Mutual funds (MFs)
5. Tax-free bonds

I retired at 35. I have shared some good posts of The Rookie Retiree. Everyone should follow that blog(https://www.therookieretiree.com/).