Brihat Parashara Hora Shastra
दारस्तानं गते सूर्ये तदीशे भृगुसंयुते । सप्तमैकादशे वर्षे विवाहः प्रायशो भवेत् ॥ २३॥
If Sūrya is in Yuvati, while his dispositor is yuti with Śukr, there will be marriage at 7th, or 11th year of age.
english translation
dArastAnaM gate sUrye tadIze bhRgusaMyute । saptamaikAdaze varSe vivAhaH prAyazo bhavet ॥ 23॥
hk transliteration by Sanscript