Agni Purana (Jyotisha Selections) · by Vyasa
Chapter 1 · Muhurta: Marriage, Home, Farming
ज्योतिःशास्त्रम्
ऐन्द्रे गुरुः शशी चैव प्राजापत्ये रविस्तथा ।पूर्णिमा ज्येष्ठमासस्य महाज्यैष्ठी प्रकीर्तिता ॥ ६४ ॥
In the full Agni Purana this is chapter 121, verse 64.
Jupiter and the Moon in Jyeshtha, and the Sun in Rohini: the full moon of Jyeshtha month is called Mahajyaishthi.
Simple meaning: Jupiter and the Moon in Jyeshtha and the Sun in Rohini make the full moon Mahajyaishthi.
स्वात्यन्तरे यन्त्रनिष्ठे शक्रस्योत्थापयेद्ध्वजम् ।
Indra's flag is raised at a set time and taken down after a week.
सर्वं हेमसमं दानं सर्वे ब्रह्मसमा द्विजाः ।
On the day of a solar eclipse, every gift, Brahmin and water is held to be very holy.
ध्वाङ्क्षी महोदरी घोरा मन्दा मन्दाकिनी तिला ।
The Sun's entry into a sign has seven names by the day of the week.