Narada Purana (Jyotisha Selections) · by Vyasa
Chapter 6 · Calendar, Muhurta Elements
कालमानं मुहूर्ताङ्गानि च
परिवस्य च पूर्वार्द्धं सर्वकार्येषु गर्हितम् ।विष्कंभवज्रयोस्तिस्रः षड्वा गंडातिगंडयोः ॥ २१४ ॥
In the full Narada Purana (Purva Bhaga) this is chapter 56, verse 214.
And the first half of Parigha is condemned in every act. In Vishkambha and Vajra, three ghatikas (24-minute unit) are condemned. In Ganda and Atiganda, six.
Simple meaning: The first half of Parigha is bad for every act. Vishkambha and Vajra lose three ghatikas, Ganda and Atiganda six.
व्यागघाते नव शूले तु पंच नाड्यो हि गर्हिताः ।
Vyaghata loses nine ghatikas and Shula five. Nine stars are named as head stars.
ज्ञेयानि सहचित्राणि मूर्द्धभानि यथाक्रमम् ।
Draw one line upward and thirteen lines across it.
तत्र खार्जूरिके चक्रे कथितं मूर्ध्नि भं न्यसेत् ।
Put the head star at the top of the date-palm figure. Check if the Sun and Moon share one line.