God’s Messenger used to pray in the forenoon so often that we felt he would never stop doing so; then he would leave off doing so for so long that we felt he would never resume prayer at that time.
I asked Ibn ‘Umar whether he prayed in the forenoon and he said he did not. I asked whether ‘Umar did and he said he did not. I asked whether Abu Bakr did and he said he did not. I asked whether the Prophet did and he said, “I don’t think so.”
Abu Huraira reported God’s Messenger as saying, “If anyone perseveres in praying the two rak'as of the forenoon, his sins will be forgiven him, even if they are like the foam of the sea.”