Question on a Mahayana Sutra (Three Svabhavas)
What are objects?
Worldly things, for ex. 'Table'. or 'Car'.
If we divide them to parts, is that 'thing' exist further?
can we say that 'thing' exist before divide to parts?
So that 'things' are considered as 'forms'(nimitta).
The 'things'(forms) has signs('name') and shapes('rupa'/form/object).
We believe(adhere to) these 'things' are real objects.
This is called false discrimination (attachment to names and attachment to objects).
This adherence takes place in two ways.('ajjhattaṃ'- Internal and 'bahiddhā'- External).  As shown in 'Sathipattana sutta'

.....In this way they meditate by observing an aspect of the body inside;
they meditate by observing an aspect of the body outside; they
meditate by observing an aspect of the body inside and outside.
(In Pali: Iti ajjhattaṃ vā kāye kāyānupassī viharati, bahiddhā vā kāye
kāyānupassī viharati, ajjhat­ta­bahid­dhā vā kāye kāyānupassī
viharati;)

So what is &quot;get attached to inner and external things [as realities]...&quot;
Inner things - person, I, Myself, Me, Body etc.
External  things - others, they, He/s ,It etc.