Brihat Parashara Hora Shastra
पुत्रस्य च गुरोः पुत्रे जायायाः सप्तमे भृगोः। अष्टमस्य व्ययस्यापि मन्दान्मृत्यौ व्यये तथा॥ ४२॥
derivable from Ari Bhava. The 5th from Guru, the 7th from Śukr and both the 8th and 12th from Śani stand for consideration, respectively, in respect of offspring, spouse and death.
english translation
putrasya ca guroH putre jAyAyAH saptame bhRgoH। aSTamasya vyayasyApi mandAnmRtyau vyaye tathA॥ 42॥
hk transliteration by Sanscript