For this reason, my dear boy, you should not endeavor for this; it will not be successful. It is better that you go home. When you are grown up, by the mercy of the Lord you will get a chance for these mystic performances. At that time you may execute this function.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
अतो निवर्ततामेष निर्बन्धस्तव निष्फलः । यतिष्यति भवान् काले श्रेयसां समुपस्थिते
ato nivartatāmeṣa nirbandhastava niṣphalaḥ | yatiṣyati bhavān kāle śreyasāṃ samupasthite
SB 4.8.32