Narada Purana (Jyotisha Selections) 3.91

सूर्यहोरागतः पापः समभेषु तु मध्यमाः ।

Bad planets in the Sun's half give the results told. In even signs they are middling.

स्वमित्रत्र्यंशगश्चंद्रः सुरूपं गुणिनं नरम् ।

The Moon in a friendly third of a sign gives a handsome, gifted person.

व्यालायुधे चतुष्पादांऽजेषु च त्र्यंशकेषु च ।

In snake, weapon, animal and bird thirds the person may be sharp, violent, unfaithful or a wanderer.