Optative, jussive, permissive (3rd person)
The suffix -SIN conveys the speaker's expectation towards a (3rd) person or state of things, whether it is a wish (optative),
an obligation (jussive) or a permission (permissive).
If several persons are concerned (3rd person plural), the suffix is pluralized in -SINLAR.
The optative conveys the speaker's attitude of hope or wish directly oriented towards a person or a state of thing.
Shu gaping to'g'ri bo'lsin.
May those words of yours come true.
May god help us.
The jussive signals the speaker's command that the proposition he expresses be brought about.
Let him come!
Sovchilar kimning qiziga borsin?
To which girl's family should go the matchmaker?
The permissive signals the speaker's permission or agreement that the proposition he expresses be brought about.
Let them know.