Many thanks for the great answers. This is Satsang indeed.
Question 1: What's the best reason for not doing enmity or harboring ill-feeling for anyone?This question came to the mind while reading the following Pankiti in Siri Bavan Akhri Sahib:
ਵਵਾ ਵੈਰੁ ਨ ਕਰੀਐ ਕਾਹੂ ॥Guru Sahib very clearly gives the Hukam through the "ਵ" letter of Gurmukhi that "Don't do Vair (Enmity) with anyone". What a clear Hukam this is. Furthermore, if we want to be one with Vaheguru, who is Nirvair (without Vair or Enmity) then we too will have to become without enmity. Only like objects can merge.
In the very next Pankiti, Siri Guru jee gives the most effective reason as to why we should not do enmity with anyone:
ਘਟ ਘਟ ਅੰਤਰਿ ਬ੍ਰਹਮ ਸਮਾਹੂ ॥(In every ਘਟ i.e. body, Vaheguru is merged i.e. residing.)
In the first Pankiti Guru Sahib gives Hukam to not do enmity with anyone and in the second Pankiti Guru Sahib provides us with the reason for not doing enmity. The reason is that since Vaheguru is residing in every Ghat (body), doing enmity with anyone amounts to doing enmity with Brahm (Vaheguru). Only a foolish person would dare to do enmity with Vaheguru.
Now the question arises that what happens if despite finding out that Brahm is residing in everyone, we still continue to harbor feelings of enmity for someone. Siri Guru jee in this Qaramati Pauri has given the solution for eradicating enmity from the mind:
ਵੈਰ ਵਿਰੋਧ ਮਿਟੇ ਤਿਹ ਮਨ ਤੇ ॥
ਹਰਿ ਕੀਰਤਨੁ ਗੁਰਮੁਖਿ ਜੋ ਸੁਨਤੇ ॥
ਵਰਨ ਚਿਹਨ ਸਗਲਹ ਤੇ ਰਹਤਾ ॥
ਨਾਨਕ ਹਰਿ ਹਰਿ ਗੁਰਮੁਖਿ ਜੋ ਕਹਤਾ ॥੪੬॥The two things that we have to do are 1) listen to Hari-Kirtan (Kirtan of Gurbani) and 2) to say Har Har (i.e. Jap Naam) according to Gurmat (Gurmukh jo Kahta).
As a result of doing the aforementioned two spiritual actions, one becomes free of all enmity.
If we look at it reversely, we can safely assume that if someone has enmity for someone, in his mind, then he definitely has not listened to Hari Kirtan and has not said (japped) Gurmat Naam according to Gurmat because Hari Kirtan and Gurmat Naam do not let a person harbor enmity in his mind.
Question 2: What to do when someone else does enmity with you and harbors ill-feeling for you?This is a tough question and here is what has come to mind with respect to this question:
1. First and the foremost thing is - don't reciprocate the enmity and ill-feeling for this person who hates you.
2. In your mind do an introspection to see if you have harmed the person in any way and if you do find that you have caused some harm to this person, apologize to this person and seek forgiveness from Vaheguru as well.
3. If the person is doing enmity despite any provocation, then it's best to ignore such person and continue to do the spiritual tasks Guru Sahib has assigned. This Gurbani Pankiti is very relevant in such situation -
ਹਰਿ ਜਨੁ ਰਾਮ ਨਾਮ ਗੁਨ ਗਾਵੈ ॥ ਜੇ ਕੋਈ ਨਿੰਦ ਕਰੇ ਹਰਿ ਜਨ ਕੀ ਅਪੁਨਾ ਗੁਨੁ ਨ ਗਵਾਵੈ ॥1॥ Harjan should continue singing Gurbani roopi Hargun (praises) and if someone slanders the Harjan, then the Harjan in return should not lose his Gunn of continuing to sing praises peacefully.
May Guru Sahib do Kirpa and remove enmity from the hearts of all Gursikhs, so that all Gursikhs may jointly do Kirtan and Naam Abhyaas.
Daas,
Kulbir Singh