It is narrated from Hazrat Juwayriya (may Allah be pleased with her) that once the Prophet (peace be upon him) came to me in the morning while I was reciting tasbihat. After a while, the Prophet (peace be upon him) left for some work, and then returned at midday and said: "Have you been sitting here since then?" I replied: "Yes!" The Prophet (peace be upon him) said: "Shall I not teach you such words that if their weight is compared to your lengthy tasbihat, their scale will outweigh them? And they are: «سُبْحَانَ اللَّهِ عَدَدَ خَلْقِهِ» three times, «سُبْحَانَ اللَّهِ زِنَةَ عَرْشِهِ» three times, «سُبْحَانَ اللَّهِ رِضَا نَفْسِهِ» three times, «سُبْحَانَ اللَّهِ مِدَادَ كَلِمَاتِهِ» three times." The name of Hazrat Juwayriya was previously Barra, which the Prophet (peace be upon him) himself later changed to Juwayriya.