My Father رحمه الله said, it was narrated to us by Saʿd bin ʿAbd Allāh, who said, it was narrated to us by Aḥmed bin Moḥammed bin ʿĪsa, from al-Ḥussain bin Sayf, from Sālim bin Ghānim:

From Abī ʿAbd Allāh عليه السلام who said: “Whoever says ‘There is no god but Allāh’ one hundred times at the time when he wishes to go to bed, Allāh builds for him a house in Paradise.
Whoever seeks forgiveness one hundred times at the time when he wishes to go to bed his sins will wither just as how the leaves tumble off the tree.”

أبي (ره) قال حدثنا سعد بن عبد الله عن أحمد بن محمد بن عيسى عن الحسين بن سيف عن سالم بن غانم عن أبي عبد الله عليه السلام قال من قال حين يأوي إلى فراشه لا إله إلا الله مئة مرة بنى الله له بيتا في الجنة، ومن استغفر حين يأوى إلى فراشه مئة مرة تحاتت ذنوبه كما يسقط ورق الشجر