Phaladeepika
मनुः परः सनिर्धनिर्नृपस्तपो वने क्रमात् । दिवाकरदिवत्सराः शुभाशुभाप्तिहेतवः ॥ ३॥
5, 21, 7, 9, 10, 16 and 4 are the numbers representing the period in years respectively of tho seven planets reckoned from the Sun, and are the means (sources) for feeling the good and bad effects.
english translation
manuH paraH sanirdhanirnRpastapo vane kramAt । divAkaradivatsarAH zubhAzubhAptihetavaH ॥ 3॥
hk transliteration by Sanscript