Manusmriti
पलं सुवर्णाश्चत्वारः पलानि धरणं दश । द्वे कृष्णले समधृते विज्ञेयो रौप्यमाषकः ॥ १३५ ॥
Four suvarnas are one pala, and ten palas one dharana; two krishnalas (of silver), weighed together, must be considered one mashaka of silver.
english translation
palaM suvarNAzcatvAraH palAni dharaNaM daza । dve kRSNale samadhRte vijJeyo raupyamASakaH ॥ 135 ॥
hk transliteration by Sanscript