Phaladeepika
विलग्नमन्दिस्फुटयोगभांशं निर्यणमासं प्रवदन्ति तज्ज्ञाः । निर्यणचन्द्रो गुलिकेन्दुयोगो लग्नं विलग्नार्किसुतेन्दुयोगः ॥ ११॥
Find out the Rasi and its Navamsa indicated by the sum-total of the figures for the Lagna and Mandi. The Rasi and its Navamsa, say the Astrologers, will give the clue to the particular month and the portion thereof in a year in which a person's death may be expected to happen; (.e., when the Sun arrives at this particular Rasi and the particular Navamsa thereof, the person will die). The Moon at the time of the decease will occupy the Rasi indicated by the total of the figures for Mandi and the Moon; and the rising sign will be that denoted by the total of the figures for the Lagna Mandi and the Moon.
english translation
vilagnamandisphuTayogabhAMzaM niryaNamAsaM pravadanti tajjJAH । niryaNacandro gulikenduyogo lagnaM vilagnArkisutenduyogaH ॥ 11॥
hk transliteration by Sanscript