Phaladeepika
चन्द्रात्सुखाष्टमेशंशत्रिकोणे विदेसाधिपे । मातुविंयोगं तन्मासे निर्दिश्लेल्लग्नतः पितुः ॥ ८॥
Find out the Navamsas occupied by the lords of the 4 th and the 8 th houses reckoned from the Moon. When the Sun triangular to these, the transists through a position loss of the mother should be predicted. The father's demise should be similarly guessed by reckoning from the Lagna or the Sun instead of from the Moon.
english translation
candrAtsukhASTamezaMzatrikoNe videsAdhipe । mAtuviMyogaM tanmAse nirdizlellagnataH pituH ॥ 8॥
hk transliteration by Sanscript