Agni Purana (Jyotisha Selections) · by Vyasa
Chapter 1 · Muhurta: Marriage, Home, Farming
ज्योतिःशास्त्रम्
एतेषु षट्सु विज्ञेयं धान्यनिष्क्रमणं बुधैः ।देवतारामवाप्यादिप्रतिष्ठोदङ्मुखे रवौ ॥ ५४ ॥
In the full Agni Purana this is chapter 121, verse 54.
The wise know these six stars are for taking grain out. Gods, groves, stepwells and the like are set up when the Sun moves north.
Simple meaning: Taking out grain and setting up gods and stepwells have their stars and the Sun's northward turn.
मिथुनस्थे रवौ दर्शाद्यदि स्याद्द्वादशी तिथिः ।
Vishnu's sleep rite falls on the 12th moon day after the new moon, with the Sun in Gemini.
सिंहतौलिगते चार्के दर्शाद्यद्वादशीद्वयम् ।
With the Sun in Leo and Libra, the two 12th days are for Indra's raising and Hari's waking.
तथा कन्यागते भानौ दुर्गोत्थाने तथाऽष्टमी ।
Durga's raising falls on the 8th with the Sun in Virgo. A special case follows.