Abd al-Rahman bin Abi Layla (may Allah have mercy on him) said that no one other than Sayyidah Umm Hani (may Allah be pleased with her) told us that she had seen the Prophet (peace and blessings be upon him) offering the Duha (forenoon) prayer. She said that on the day of the Conquest of Makkah the Prophet (peace and blessings be upon him) entered her house, performed ghusl and offered eight rak'ahs. She said: I have not seen a lighter prayer than it, yet its bowing and prostrations were complete.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 4902