Yahya ibn Ayyub, Qutaybah, and Ali ibn Hujr narrated to us. Ibn Ayyub said: Isma'il — that is, Ibn Ja'far — narrated to us: Muhammad — that is, Ibn Abi Harmalah — informed me, saying: Abu Salamah informed me that he asked 'A'ishah about the two prostrations (rak'ahs) that the Messenger of Allah, peace and blessings be upon him, used to pray after the afternoon prayer ('Asr). She said: "He used to pray them before the afternoon prayer. Then he was occupied from them, or he forgot them, so he prayed them after the afternoon prayer. Then he made them permanent." And whenever he prayed a prayer, he would make it permanent. Yahya ibn Ayyub said: Isma'il said: "Meaning, he continued upon them."