I Samuel 2:18 Halakhah

וּשְׁמוּאֵ֕ל מְשָׁרֵ֖ת אֶת־פְּנֵ֣י יְהוָ֑ה נַ֕עַר חָג֖וּר אֵפ֥וֹד בָּֽד׃

But Samuel ministered before the LORD, being a child, girded with a linen ephod.

Read halakhic rulings (Jewish law) on I Samuel 2:18: and classical halakhic sources.