«وَفِي النَّفْسِ حَاجَاتٌ وَفِيكَ فَطَانَةٌ»
There are needs within my heart, and you possess discernment.
The following thought is that silence itself can speak to a perceptive listener. No request is stated outright, but the speaker's need is paired with the addressee's insight, creating a clear contextual signal of petition.
The device succeeds when the hint is both courteous and sufficiently understandable to communicate the intended request.