It was narrated from Anas that he and the Messenger of Allah (ﷺ) and his mother, and his maternal aunt (were together). The Messenger of Allah (ﷺ) prayed, and he told Anas to stand on his right and his mother and maternal aunt behind them.
أَخْبَرَنَا مُحَمَّدُ بْنُ بَشَّارٍ، قَالَ حَدَّثَنَا مُحَمَّدٌ، قَالَ حَدَّثَنَا شُعْبَةُ، قَالَ سَمِعْتُ عَبْدَ اللَّهِ بْنَ مُخْتَارٍ، يُحَدِّثُ عَنْ مُوسَى بْنِ أَنَسٍ، عَنْ أَنَسٍ، أَنَّهُ كَانَ هُوَ وَرَسُولُ اللَّهِ صلى الله عليه وسلم وَأُمُّهُ وَخَالَتُهُ فَصَلَّى رَسُولُ اللَّهِ صلى الله عليه وسلم فَجَعَلَ أَنَسًا عَنْ يَمِينِهِ وَأُمَّهُ وَخَالَتَهُ خَلْفَهُمَا .
Nesai
The Book of Leading the Prayer (Al-Imamah) • Hadith 803