हमें कलह नहीं चाहिए।

हमें is the oblique/object form of हम (we/us). In this sentence, Hindi uses हमें because the idea is not simply we do X, but more like to us ... is needed/wanted.

So:

• हम = we
• हमें = to us / us

With चाहिए, Hindi often uses this pattern:

• मुझे पानी चाहिए = I need water
• हमें शांति चाहिए = We need peace
• हमें कलह नहीं चाहिए = We do not want/need conflict

So even though English says we, Hindi naturally says something closer to to us.

Here, चाहिए means something like is wanted, is needed, or should be had, depending on context. In natural English, the whole sentence is usually translated as:

• We do not want conflict
• We do not need conflict
• We want no strife

In many everyday Hindi sentences, X चाहिए is the normal way to say want/need X:

• मुझे चाय चाहिए = I want tea / I need tea
• उसे मदद चाहिए = He/She needs help
• हमें कलह नहीं चाहिए = We do not want conflict

So चाहिए does not behave exactly like the English verb want. It is part of a very common Hindi structure.

In Hindi, नहीं usually comes before the verb or verbal element it negates. Here it is negating चाहिए.

So:

• हमें कलह चाहिए = We want/need conflict
• हमें कलह नहीं चाहिए = We do not want/need conflict

That placement is very normal in Hindi.

कलह means strife, discord, quarrel, or conflict. It has a somewhat formal, literary, or elevated feel compared with some more everyday words.

For example:

• झगड़ा = quarrel, fight, argument
• लड़ाई = fight, battle, quarrel
• कलह = discord, strife, internal conflict

So हमें कलह नहीं चाहिए sounds a bit more formal or serious than:

• हमें झगड़ा नहीं चाहिए = We do not want a quarrel
• हमें लड़ाई नहीं चाहिए = We do not want a fight

If you saw कलह, it is good to understand it as discord/strife, not just a casual little argument.

Because चाहिए already works as the predicate here. In this kind of sentence, Hindi normally does not add है.

So the natural form is:

• मुझे पानी चाहिए
• उसे आराम चाहिए
• हमें कलह नहीं चाहिए

Not:

• हमें कलह नहीं चाहिए है ✘

That would sound wrong.

In modern standard Hindi, चाहिए is usually treated as basically fixed in this construction. It often stays the same regardless of whether the thing wanted is masculine, feminine, singular, or plural.

For example:

• मुझे पानी चाहिए = I need water
• मुझे किताब चाहिए = I need a book
• मुझे किताबें चाहिए = I need books

So in हमें कलह नहीं चाहिए, चाहिए does not change because of कलह.

Usually it is understood as we don’t want conflict or we do not need conflict.

That said, चाहिए can sometimes have a should/ought to sense in other contexts:

• तुम्हें जाना चाहिए = You should go

But when the pattern is someone + noun + चाहिए, it very often means someone wants/needs that noun:

• मुझे समय चाहिए = I need time
• हमें शांति चाहिए = We want peace
• हमें कलह नहीं चाहिए = We do not want conflict

So here, the want/need reading is the natural one.

Yes. हम kalह नहीं चाहते is also grammatical and means We do not want conflict.

But the nuance is a little different:

• हमें कलह नहीं चाहिए = We do not want/need conflict
  This is a very common, natural pattern.
• हम कलह नहीं चाहते = We do not want conflict
  This uses the verb चाहना (to want) more directly.

So both can work, but हमें ... नहीं चाहिए is often very idiomatic when talking about wanting or needing a thing.

The sentence is:

हमें | कलह | नहीं | चाहिए

A helpful way to see it is:

• हमें = to us
• कलह = conflict/strife
• नहीं = not
• चाहिए = wanted/needed

So the structure is roughly:

Experiencer + thing + negation + चाहिए

This is a very common Hindi pattern.

A simple pronunciation guide is:

hamẽ kalah nahī̃ chāhiye

A few notes:

• हमें has a nasal sound at the end: hamẽ
• कलह is roughly ka-lah
• नहीं is nahī̃
• चाहिए is often said something like chaa-hi-ye

The stress in Hindi is usually much lighter than in English, so try not to over-stress one word too strongly.

Yes. Hindi usually does not use articles like a, an, or the the way English does. So कलह by itself can mean:

• conflict
• strife
• quarreling
• discord

depending on context.

So हमें कलह नहीं चाहिए is naturally understood as We do not want conflict/discord, not necessarily We do not want a conflict in the narrow English sense.

Yes. You may see both:

• चाहिए
• चाहिये

In modern standard writing, चाहिए is more common. So if you are learning standard Hindi, चाहिए is the safer spelling to use.