Brihat Parashara Hora Shastra
पञ्चाधिके विना राशिं भागाद्विघ्नाश्च दृक् स्फुटा । वेदाधिके त्यजेद् भूताद् भागा दृष्टिः त्रिभाधिके ॥ ७॥
The resultant product is Drishti Kona (or aspectual angle). If the difference is in excess of 5 Rāśis, ignore the Rāśis and multiply the degrees etc. by 2, which is the value of the Drishti. If the difference is in excess of 4 Rāśis, deduct it from 5 Rāśis, and the resultant degees etc. become the Drishti value.
english translation
paJcAdhike vinA rAziM bhAgAdvighnAzca dRk sphuTA । vedAdhike tyajed bhUtAd bhAgA dRSTiH tribhAdhike ॥ 7॥
hk transliteration by Sanscript