Narada Purana (Jyotisha Selections) · by Vyasa
Chapter 6 · Calendar, Muhurta Elements
कालमानं मुहूर्ताङ्गानि च
त्र्यायारिषु कुजः श्रेष्ठो जन्मना चेन्न विध्यते ।व्ययेष्वंकस्थितैः सौरिसौम्यसूर्यैः शुभौषधात् ॥ २७३ ॥
In the full Narada Purana (Purva Bhaga) this is chapter 56, verse 273.
Mars is best in the 3rd, 11th and 6th from the birth sign, if it is not blocked. It is blocked by Saturn, Mercury and the Sun standing in the 12th, 5th and 9th. (Our text is unclear here: the closing word 'shubhaushadhat'.)
Simple meaning: Mars is good in the 3rd, 11th and 6th, unless planets in the 12th, 5th or 9th block it.
ज्ञः स्वायार्यष्टखायेषु जन्मतश्चेन्न विध्यते ।
Mercury is good in the 2nd, 6th, 8th, 10th and 11th, unless other planets block it.
जन्मराशेर्गुरुः श्रेष्ठः स्वायगोऽध्यस्तगो न चत् ।
Jupiter is good in the 2nd, 5th, 7th and 11th, unless planets in blocking places stop it.
जन्मभादासुताष्टांकांत्यायेष्विष्टो भृगोःसुतः ।
Venus is good in most places from the birth sign, unless planets in blocking places stop it.