Sayyidah Umm Hani bint Abi Talib (may Allah be pleased with her) said: I came to the Prophet (peace and blessings be upon him) and said: O Messenger of Allah, I am a woman who has become heavy (now), so teach me some deed that I can do while sitting. He (peace and blessings be upon him) said: "Say Allahu Akbar one hundred times; that is better for you than one hundred sacrificial camels, draped in coverings and accepted. Say Subhan Allah one hundred times; that is better for you than one hundred saddled and bridled horses that you give (to the fighters) to ride in the path of Allah. Say al-Hamdu lillah one hundred times; that is better for you than freeing one hundred slaves from the Children of Isma'il. And say 'There is no god worthy of worship except Allah' one hundred times; (by its blessing) no sin will remain, and no deed will surpass it."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 21429