Shaykh Mawlana Wasiullah (Allah have mercy on him) said,

‘If someone rebukes another individual without a reason and he remains silent. That is, not saying anything in return. This leads to extreme annihilation of the lower self (nafs).

Allah likes this quality very much.

This is also called patience (sabr), an unique quality of a believer.’

Shaykhan: Ainan e tajriyan, page 54