What did Aisha mean by her saying, "O Messenger of Allah, I do not see your Lord but that He hastens to fulfill your desire," when a verse was revealed permitting the Prophet to marry his adopted son's wife?

Aishah (may Allah be pleased with her) made her statement regarding the Prophet’s (peace be upon him) marriage to Zaynab, after Allah Almighty revealed: {You may postpone [the turn of] whom you will among them and take to yourself whom you will. And any that you desire of those [wives] from whom you had [temporarily] separated – there is no blame upon you [in approaching them again]}. She meant by this that Allah was lightening the burden on the Prophet and granting him ease.