कबीरा खडा बाज़ार में

कबीरा खडा बाज़ार में, मांगे सबकी खैर | ना काहू से दोस्ती, ना काहू से बैर ||

In the marketplace of life stands Kabir, praying for everyone's welfare.Neither any friendship nor enmity with anyone.

Kabir stresses the importance of detachment(vairagya) in life. He calls it a market as frequent interactions take place here between people and things.We should not be attached either in positive or in the negative way with anyone or anything.Constant Practice(Abhyasa), non -attachment(Vairagya) and devotion to God(Ishwara Pranidhan) have been mentioned in the old Sanskrit Texts to be the methods to attain union with God.
With regard to non attachment the Yogasutra says " दृष्ट्रानुशाविक विषय वित्रिश्नस्य वशीकार संज्ञा इति वैराग्यम II" which translates as
"As for non-reaction, one can recognize that it has been fully achieved when no attachment arises in regard to anything at all, whether perceived directly or learned".

Translation by Arvind Mishra
Kabir is explaining in laymans language what vairagya constitutes.Union with God is Kabir's context and no other.
However , we human beings can derive a lesson here too for ordinary existence as what is true for gaining divinity must also be true as an ideal for worldly life as both ought to be in consonance with each other. While doing anything we should not form value judgements about anyone or thing; business success also will depend upon if we have fair and transparent policy.