Brihat Parashara Hora Shastra
दारेशे शुभराशिस्थे स्वोच्चस्वर्क्षगतो भृगुः । पञ्चमे नवमेऽब्दे तु विवाहः प्रायशो भवेत् ॥ २२॥
TIME OF MARRIAGE (upto Sloka 34). If Yuvati Lord is in a benefic‟s Bhava (or in Dharm, as Subha Rāśi so means), while Śukr is exalted, or is in own Rāśi, the native will marry at the age of 5, or 9.
english translation
dAreze zubharAzisthe svoccasvarkSagato bhRguH । paJcame navame'bde tu vivAhaH prAyazo bhavet ॥ 22॥
hk transliteration by Sanscript