Image taken from here
"From One, many to being came;
'many' but Oneness is;
Don't get confounded, Reality
is 'One' , this truth don't miss
Commotions vast display - all this
I vow, of Loved-one is."
"Reality is One! Although we seem to be 'many' but in reality we are 'one'"
Bhitai knew that his readers will stumble upon confusions in understanding the concept of 'Oneness' so he has already mentioned this in the line "Don't get confounded..."
He is promising that everything we see (including ourselves) belongs to Loved-one.
I believe this thought is going parallel with Iqbal's concept of 'Organic Unity', which, Khurram Ali Shafique has mentioned on his blog:
1- Unity of Life
2- Unity of Humankind
3- Unity of Nation