It is narrated from Abdullah bin Abi Musa (and according to the more correct opinion, Abdullah bin Abi Qais), "who was a freed slave of Banu Nasr bin Muawiyah," that Umm al-Mu'mineen Hazrat Aisha (may Allah be pleased with her) said to me: Never abandon the night prayer (Qiyam al-Lail), because the Prophet (peace and blessings be upon him) never used to leave it. Even if he was ill or did not feel energetic, he would still recite it while sitting.