Aishah (may Allah be pleased with her) says: I did not feel as jealous about any wife of the Prophet (peace and blessings be upon him) as I felt about Khadijah (may Allah be pleased with her), because I had heard the Prophet (peace and blessings be upon him) mention her so much. The Prophet (peace and blessings be upon him) married (me) three years after her death, and Allah, the Lord of Might, commanded him (peace and blessings be upon him): "Give her the glad tidings of a house of pearl in Paradise, in which there will be neither noise nor fatigue."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب القسم والنشوز / 14797