Jataka Tattva · by Mahadeva
Chapter 6 · Mother and Home: the 4th House
चतुर्थविवेकः
सुखपांशेशांशपे केन्द्रे बलाढ्ये मातुर्दीर्घायुः ।
Take the 4th lord and the lord of its navamsha (one-ninth part of a sign). Now take the lord of that planet's navamsha. Say it is in a kendra (corner house) and strong. Then the mother lives long.
सुखेशेऽङ्गे बलाढ्ये माता पतिव्रता ।
Say the 4th lord is in the lagna (rising sign) and strong. Then the mother is true to her husband.
सुखपे वैशेषिकांशे शुभदृष्टे माता पतिव्रता ।
Say the 4th lord is in vaisheshika amsha (a good rank of strength). Good planets aspect it. Then the mother is true to her husband.
तुर्येशे शुभार्कदृष्टे माता पतिव्रता ।
Say good planets and the Sun aspect the 4th lord. Then the mother is true to her husband.