The is not used.
1.The Delhi is the capital of India. (x)
→Delhi is the capital of India. (√)
2.She met me in the Faiz Bazaar. (x)
→She met me in Faiz Bazaar. (√)
3.He has failed in the English. (x)
→He has failed in English. (√)
4.She was suffering from the typhoid. (x)
→She was suffering from typhoid. (√)
5.The union is strength. (x)
→Union is strength. (√)
The is use before in these sentences.
6.This is a best player I have ever met. (x)