عَنْ عَطَاءٍ عَنْ عَائِشَةَ رَضِيَ اللَّهُ عَنْهَا قَالَتْ: لَقَدْ كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ يُصَلِّي وَأَنَا عَنْ يَمِينِهِ وَعَنْ شِمَالِهِ مُضْطَجِعَةً
It is narrated from Sayyidah Aisha (may Allah be pleased with her), she says: Indeed, the Messenger of Allah (peace and blessings be upon him) would be performing prayer and I would be lying down sometimes on his right side and sometimes on his left side.