Silsilat al-Ahadith al-Sahihah

It is narrated from Sayyidah Juwayriyyah (may Allah be pleased with her) that the Noble Prophet (peace and blessings of Allah be upon him) came to her early in the morning after performing the prayer, while she was sitting on her prayer mat. When the Prophet (peace and blessings of Allah be upon him) returned after the time of Duha had passed, she was still sitting there. The Prophet (peace and blessings of Allah be upon him) asked: "Are you still in the same state as I left you?" She replied: "Yes." So the Noble Prophet (peace and blessings of Allah be upon him) said: "After leaving you, I recited four phrases three times. If they were weighed against all that you have been reciting since the beginning of the day, they would outweigh them. (And they are:) «سبحان الله وبحمده ، عدد خلقه ، ورضا نفسه ، وزنة عرشه ، ومداد كلماته» 'We declare the purity of Allah and His praise, as many times as the number of His creation, according to His pleasure, equal to the weight of His Throne, and equal to the ink (or abundance) of His words.'"