Brihat Parashara Hora Shastra
लग्नादेकान्तरस्थैश्च षड्भगैश्चक्रमुच्यते । धनादेकान्तरस्थैस्तु समुद्रः षडगृहाश्रितै ॥ १५॥
Chakr and Samudr Yogas. If all the Grahas occupy six alternative Rāśis, commencing from Lagn, Chakr Yog is formed. Samudr Yog is produced, if all Grahas occupy six alternative Rāśis, commencing from Dhan Bhava.
english translation
lagnAdekAntarasthaizca SaDbhagaizcakramucyate । dhanAdekAntarasthaistu samudraH SaDagRhAzritai ॥ 15॥
hk transliteration by Sanscript