Setting
1- The Messenger of Allah (may Allah's peace and blessings be upon him) would give up a deed, even though he liked to perform it, for fear that people would follow him and perform it, and it would thus become obligatory for them
2- The prayer of the oft-returning to Allah is when weaned camels are bitten by excessive heat
3- The Messenger of Allah (may Allah's peace and blessings be upon him) used to offer the Duha Prayer as four Rak‘ahs and sometimes as much more as Allah willed
4- Did the Prophet (may Allah's peace and blessings be upon him) pray the Duha prayer? She said: No, unless he came back from being away
