This is the 505th most frequent Hindi word.
कहकर
"By saying" or "having said."
The word 'कहकर' here conveys that the subject communicated a message before leaving.
वह मुझसे कहकर गया कि वह देर से आएगा।
He said to me that he will come late.
The word 'कहकर' indicates that the person used a statement or saying as a means to dismiss or avoid the topic.
उसने हंसते हुए कहकर बात को टाल दिया।
He avoided the topic by saying something with a smile.
The word 'कहकर' is used to denote that the explanation involved elaborating through speaking.