Brihat Parashara Hora Shastra
एवं हि शनिना चिन्ता कार्या तर्कैर्विचक्षणैः । कर्माधिपेन च तथा चिन्तनं कार्यमायुषः ॥ ३॥
Śani and Karm‟s Lord about Longevity. Similarly consider Śani and Karm‟s Lord in the matter of longevity. Karm‟s Lord is in Randhr along with a malefic Grah and/or Lagn‟s Lord.
english translation
evaM hi zaninA cintA kAryA tarkairvicakSaNaiH । karmAdhipena ca tathA cintanaM kAryamAyuSaH ॥ 3॥
hk transliteration by Sanscript