FWP:
Why would the beloved 'fear' her lovers' complaints in the first place? Perhaps she might fear God and the coming Judgment Day, when their complaints would be heard in the Divine Court (think of {111,7}). Perhaps she might fear being accused of murder (think of {21,9}), after she had tormented them to the point of death. Perhaps she might simply fear that if they collapsed and died on her, she'd have no more fun enjoying their convulsions (think of {8,3}). Or perhaps if she tormented them to death she'd simply miss their crowding around her, their humility, their devotion (think of many of the verses of {57}).
Whatever the reason, the speaker finds her fears absurd, or at least inappropriate. For 'here'-- in the beloved's domain, or in this world in general-- it's a flat rule: no complaints are heeded. The rule is so flat that it cuts two ways: she herself shouldn't heed, or 'fear', the lovers' moaning and groaning; and also she needn't 'fear' that anybody else will heed it either.
Or alternatively, 'here' in the lover's (or lovers') wretched neighborhood-- and this is the usual sense of 'here' when contrasted with 'there'-- nobody can even hear what anybody else is moaning and groaning about. Because they are all so weak that their complaints don't even make it past their lips (think of {177,7})? Or because they're all so jealous that they begrudge each other any information at all about the beloved (think of {159,2})? Or because they're all so self-absorbed that they pay no heed whatsoever to each other? In Urdu, sun'naa has to do the work done by both 'to hear' and 'to listen to' in English, so the interpretive range is usually a bit wider.
Behind all these possibilities is surely the lover's indirect but insistent complaint
to the beloved: she never listens to his words, she never pays any heed to him! The charm
of the verse is that this rather humdrum, routine complaint has been cleverly
turned into a flat 'rule'. Why is the rule stated so flatly? Surely for its
very much greater (and more amusing) rhetorical effect. We all know that often
a particular statement works better-- more ironically, more suggestively,
more multi-dimensionally-- if it's phrased in the abstract ('It's not as if
anybody does any work around here'; 'Nobody's asking anybody for any favors';
'There's a law that all retired New Yorkers have to move to Florida').
Here such an operation has been performed by the amused or aggrieved lover--
and indeed, tone is everything in a verse like this. Is the lover speaking
accusingly, or ruefully, or matter-of-factly? As so often, we're left to decide
for ourselves.
Hali:
Here, the meaning of be-;hau.slagii is 'shallowness' [kam-:zarfii]. He says to the beloved, 'Why do you fear that we lovers will get fed up with your oppression and tyranny and complain against you to the Ruler or to the Lord? Because even if we do so, no one listens to anybody's complaint.'
==Urdu text: Yadgar-e Ghalib, p. 161