ݙ is an additional letter of the Arabic script, not used in the Arabic alphabet itself but used in Saraiki to represent a voiced alveolar implosive, [ɗ]. Its other form is also found in Saraiki Spoken in Jhang in the form of voiced retroflex implosive, [ᶑ].
It is written as ॾ in Saraiki and Sindhi's Devanagari orthography. It is derived from dāl (د), with a small ṭāʼ (ط) above to represent retroflexion (as in Urdu), and two dots below to represent implosion (as in Sindhi). The unicode for saraiki letter ݙ was approved in 2005.
References
ݙ Wikipedia(Text) CC BY-SA